File-copy from v4.4.100
This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Please refer to that tree for all history prior to this point.
Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/drivers/clk/zte/Makefile b/drivers/clk/zte/Makefile
new file mode 100644
index 0000000..74005aa
--- /dev/null
+++ b/drivers/clk/zte/Makefile
@@ -0,0 +1,2 @@
+obj-y := clk.o
+obj-$(CONFIG_SOC_ZX296702) += clk-zx296702.o
diff --git a/drivers/clk/zte/clk-zx296702.c b/drivers/clk/zte/clk-zx296702.c
new file mode 100644
index 0000000..ebd20d8
--- /dev/null
+++ b/drivers/clk/zte/clk-zx296702.c
@@ -0,0 +1,745 @@
+/*
+ * Copyright 2014 Linaro Ltd.
+ * Copyright (C) 2014 ZTE Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/of_address.h>
+#include <dt-bindings/clock/zx296702-clock.h>
+#include "clk.h"
+
+static DEFINE_SPINLOCK(reg_lock);
+
+static void __iomem *topcrm_base;
+static void __iomem *lsp0crpm_base;
+static void __iomem *lsp1crpm_base;
+
+static struct clk *topclk[ZX296702_TOPCLK_END];
+static struct clk *lsp0clk[ZX296702_LSP0CLK_END];
+static struct clk *lsp1clk[ZX296702_LSP1CLK_END];
+
+static struct clk_onecell_data topclk_data;
+static struct clk_onecell_data lsp0clk_data;
+static struct clk_onecell_data lsp1clk_data;
+
+#define CLK_MUX (topcrm_base + 0x04)
+#define CLK_DIV (topcrm_base + 0x08)
+#define CLK_EN0 (topcrm_base + 0x0c)
+#define CLK_EN1 (topcrm_base + 0x10)
+#define VOU_LOCAL_CLKEN (topcrm_base + 0x68)
+#define VOU_LOCAL_CLKSEL (topcrm_base + 0x70)
+#define VOU_LOCAL_DIV2_SET (topcrm_base + 0x74)
+#define CLK_MUX1 (topcrm_base + 0x8c)
+
+#define CLK_SDMMC1 (lsp0crpm_base + 0x0c)
+#define CLK_GPIO (lsp0crpm_base + 0x2c)
+#define CLK_SPDIF0 (lsp0crpm_base + 0x10)
+#define SPDIF0_DIV (lsp0crpm_base + 0x14)
+#define CLK_I2S0 (lsp0crpm_base + 0x18)
+#define I2S0_DIV (lsp0crpm_base + 0x1c)
+#define CLK_I2S1 (lsp0crpm_base + 0x20)
+#define I2S1_DIV (lsp0crpm_base + 0x24)
+#define CLK_I2S2 (lsp0crpm_base + 0x34)
+#define I2S2_DIV (lsp0crpm_base + 0x38)
+
+#define CLK_UART0 (lsp1crpm_base + 0x20)
+#define CLK_UART1 (lsp1crpm_base + 0x24)
+#define CLK_SDMMC0 (lsp1crpm_base + 0x2c)
+#define CLK_SPDIF1 (lsp1crpm_base + 0x30)
+#define SPDIF1_DIV (lsp1crpm_base + 0x34)
+
+static const struct zx_pll_config pll_a9_config[] = {
+ { .rate = 700000000, .cfg0 = 0x800405d1, .cfg1 = 0x04555555 },
+ { .rate = 800000000, .cfg0 = 0x80040691, .cfg1 = 0x04aaaaaa },
+ { .rate = 900000000, .cfg0 = 0x80040791, .cfg1 = 0x04000000 },
+ { .rate = 1000000000, .cfg0 = 0x80040851, .cfg1 = 0x04555555 },
+ { .rate = 1100000000, .cfg0 = 0x80040911, .cfg1 = 0x04aaaaaa },
+ { .rate = 1200000000, .cfg0 = 0x80040a11, .cfg1 = 0x04000000 },
+};
+
+static const struct clk_div_table main_hlk_div[] = {
+ { .val = 1, .div = 2, },
+ { .val = 3, .div = 4, },
+ { /* sentinel */ }
+};
+
+static const struct clk_div_table a9_as1_aclk_divider[] = {
+ { .val = 0, .div = 1, },
+ { .val = 1, .div = 2, },
+ { .val = 3, .div = 4, },
+ { /* sentinel */ }
+};
+
+static const struct clk_div_table sec_wclk_divider[] = {
+ { .val = 0, .div = 1, },
+ { .val = 1, .div = 2, },
+ { .val = 3, .div = 4, },
+ { .val = 5, .div = 6, },
+ { .val = 7, .div = 8, },
+ { /* sentinel */ }
+};
+
+static const char * const matrix_aclk_sel[] = {
+ "pll_mm0_198M",
+ "osc",
+ "clk_148M5",
+ "pll_lsp_104M",
+};
+
+static const char * const a9_wclk_sel[] = {
+ "pll_a9",
+ "osc",
+ "clk_500",
+ "clk_250",
+};
+
+static const char * const a9_as1_aclk_sel[] = {
+ "clk_250",
+ "osc",
+ "pll_mm0_396M",
+ "pll_mac_333M",
+};
+
+static const char * const a9_trace_clkin_sel[] = {
+ "clk_74M25",
+ "pll_mm1_108M",
+ "clk_125",
+ "clk_148M5",
+};
+
+static const char * const decppu_aclk_sel[] = {
+ "clk_250",
+ "pll_mm0_198M",
+ "pll_lsp_104M",
+ "pll_audio_294M912",
+};
+
+static const char * const vou_main_wclk_sel[] = {
+ "clk_148M5",
+ "clk_74M25",
+ "clk_27",
+ "pll_mm1_54M",
+};
+
+static const char * const vou_scaler_wclk_sel[] = {
+ "clk_250",
+ "pll_mac_333M",
+ "pll_audio_294M912",
+ "pll_mm0_198M",
+};
+
+static const char * const r2d_wclk_sel[] = {
+ "pll_audio_294M912",
+ "pll_mac_333M",
+ "pll_a9_350M",
+ "pll_mm0_396M",
+};
+
+static const char * const ddr_wclk_sel[] = {
+ "pll_mac_333M",
+ "pll_ddr_266M",
+ "pll_audio_294M912",
+ "pll_mm0_198M",
+};
+
+static const char * const nand_wclk_sel[] = {
+ "pll_lsp_104M",
+ "osc",
+};
+
+static const char * const lsp_26_wclk_sel[] = {
+ "pll_lsp_26M",
+ "osc",
+};
+
+static const char * const vl0_sel[] = {
+ "vou_main_channel_div",
+ "vou_aux_channel_div",
+};
+
+static const char * const hdmi_sel[] = {
+ "vou_main_channel_wclk",
+ "vou_aux_channel_wclk",
+};
+
+static const char * const sdmmc0_wclk_sel[] = {
+ "lsp1_104M_wclk",
+ "lsp1_26M_wclk",
+};
+
+static const char * const sdmmc1_wclk_sel[] = {
+ "lsp0_104M_wclk",
+ "lsp0_26M_wclk",
+};
+
+static const char * const uart_wclk_sel[] = {
+ "lsp1_104M_wclk",
+ "lsp1_26M_wclk",
+};
+
+static const char * const spdif0_wclk_sel[] = {
+ "lsp0_104M_wclk",
+ "lsp0_26M_wclk",
+};
+
+static const char * const spdif1_wclk_sel[] = {
+ "lsp1_104M_wclk",
+ "lsp1_26M_wclk",
+};
+
+static const char * const i2s_wclk_sel[] = {
+ "lsp0_104M_wclk",
+ "lsp0_26M_wclk",
+};
+
+static inline struct clk *zx_divtbl(const char *name, const char *parent,
+ void __iomem *reg, u8 shift, u8 width,
+ const struct clk_div_table *table)
+{
+ return clk_register_divider_table(NULL, name, parent, 0, reg, shift,
+ width, 0, table, ®_lock);
+}
+
+static inline struct clk *zx_div(const char *name, const char *parent,
+ void __iomem *reg, u8 shift, u8 width)
+{
+ return clk_register_divider(NULL, name, parent, 0,
+ reg, shift, width, 0, ®_lock);
+}
+
+static inline struct clk *zx_mux(const char *name, const char * const *parents,
+ int num_parents, void __iomem *reg, u8 shift, u8 width)
+{
+ return clk_register_mux(NULL, name, parents, num_parents,
+ 0, reg, shift, width, 0, ®_lock);
+}
+
+static inline struct clk *zx_gate(const char *name, const char *parent,
+ void __iomem *reg, u8 shift)
+{
+ return clk_register_gate(NULL, name, parent, CLK_IGNORE_UNUSED,
+ reg, shift, CLK_SET_RATE_PARENT, ®_lock);
+}
+
+static void __init zx296702_top_clocks_init(struct device_node *np)
+{
+ struct clk **clk = topclk;
+ int i;
+
+ topcrm_base = of_iomap(np, 0);
+ WARN_ON(!topcrm_base);
+
+ clk[ZX296702_OSC] =
+ clk_register_fixed_rate(NULL, "osc", NULL, CLK_IS_ROOT,
+ 30000000);
+ clk[ZX296702_PLL_A9] =
+ clk_register_zx_pll("pll_a9", "osc", 0, topcrm_base
+ + 0x01c, pll_a9_config,
+ ARRAY_SIZE(pll_a9_config), ®_lock);
+
+ /* TODO: pll_a9_350M look like changeble follow a9 pll */
+ clk[ZX296702_PLL_A9_350M] =
+ clk_register_fixed_rate(NULL, "pll_a9_350M", "osc", 0,
+ 350000000);
+ clk[ZX296702_PLL_MAC_1000M] =
+ clk_register_fixed_rate(NULL, "pll_mac_1000M", "osc", 0,
+ 1000000000);
+ clk[ZX296702_PLL_MAC_333M] =
+ clk_register_fixed_rate(NULL, "pll_mac_333M", "osc", 0,
+ 333000000);
+ clk[ZX296702_PLL_MM0_1188M] =
+ clk_register_fixed_rate(NULL, "pll_mm0_1188M", "osc", 0,
+ 1188000000);
+ clk[ZX296702_PLL_MM0_396M] =
+ clk_register_fixed_rate(NULL, "pll_mm0_396M", "osc", 0,
+ 396000000);
+ clk[ZX296702_PLL_MM0_198M] =
+ clk_register_fixed_rate(NULL, "pll_mm0_198M", "osc", 0,
+ 198000000);
+ clk[ZX296702_PLL_MM1_108M] =
+ clk_register_fixed_rate(NULL, "pll_mm1_108M", "osc", 0,
+ 108000000);
+ clk[ZX296702_PLL_MM1_72M] =
+ clk_register_fixed_rate(NULL, "pll_mm1_72M", "osc", 0,
+ 72000000);
+ clk[ZX296702_PLL_MM1_54M] =
+ clk_register_fixed_rate(NULL, "pll_mm1_54M", "osc", 0,
+ 54000000);
+ clk[ZX296702_PLL_LSP_104M] =
+ clk_register_fixed_rate(NULL, "pll_lsp_104M", "osc", 0,
+ 104000000);
+ clk[ZX296702_PLL_LSP_26M] =
+ clk_register_fixed_rate(NULL, "pll_lsp_26M", "osc", 0,
+ 26000000);
+ clk[ZX296702_PLL_DDR_266M] =
+ clk_register_fixed_rate(NULL, "pll_ddr_266M", "osc", 0,
+ 266000000);
+ clk[ZX296702_PLL_AUDIO_294M912] =
+ clk_register_fixed_rate(NULL, "pll_audio_294M912", "osc", 0,
+ 294912000);
+
+ /* bus clock */
+ clk[ZX296702_MATRIX_ACLK] =
+ zx_mux("matrix_aclk", matrix_aclk_sel,
+ ARRAY_SIZE(matrix_aclk_sel), CLK_MUX, 2, 2);
+ clk[ZX296702_MAIN_HCLK] =
+ zx_divtbl("main_hclk", "matrix_aclk", CLK_DIV, 0, 2,
+ main_hlk_div);
+ clk[ZX296702_MAIN_PCLK] =
+ zx_divtbl("main_pclk", "matrix_aclk", CLK_DIV, 2, 2,
+ main_hlk_div);
+
+ /* cpu clock */
+ clk[ZX296702_CLK_500] =
+ clk_register_fixed_factor(NULL, "clk_500", "pll_mac_1000M", 0,
+ 1, 2);
+ clk[ZX296702_CLK_250] =
+ clk_register_fixed_factor(NULL, "clk_250", "pll_mac_1000M", 0,
+ 1, 4);
+ clk[ZX296702_CLK_125] =
+ clk_register_fixed_factor(NULL, "clk_125", "clk_250", 0, 1, 2);
+ clk[ZX296702_CLK_148M5] =
+ clk_register_fixed_factor(NULL, "clk_148M5", "pll_mm0_1188M", 0,
+ 1, 8);
+ clk[ZX296702_CLK_74M25] =
+ clk_register_fixed_factor(NULL, "clk_74M25", "pll_mm0_1188M", 0,
+ 1, 16);
+ clk[ZX296702_A9_WCLK] =
+ zx_mux("a9_wclk", a9_wclk_sel, ARRAY_SIZE(a9_wclk_sel), CLK_MUX,
+ 0, 2);
+ clk[ZX296702_A9_AS1_ACLK_MUX] =
+ zx_mux("a9_as1_aclk_mux", a9_as1_aclk_sel,
+ ARRAY_SIZE(a9_as1_aclk_sel), CLK_MUX, 4, 2);
+ clk[ZX296702_A9_TRACE_CLKIN_MUX] =
+ zx_mux("a9_trace_clkin_mux", a9_trace_clkin_sel,
+ ARRAY_SIZE(a9_trace_clkin_sel), CLK_MUX1, 0, 2);
+ clk[ZX296702_A9_AS1_ACLK_DIV] =
+ zx_divtbl("a9_as1_aclk_div", "a9_as1_aclk_mux", CLK_DIV, 4, 2,
+ a9_as1_aclk_divider);
+
+ /* multi-media clock */
+ clk[ZX296702_CLK_2] =
+ clk_register_fixed_factor(NULL, "clk_2", "pll_mm1_72M", 0,
+ 1, 36);
+ clk[ZX296702_CLK_27] =
+ clk_register_fixed_factor(NULL, "clk_27", "pll_mm1_54M", 0,
+ 1, 2);
+ clk[ZX296702_DECPPU_ACLK_MUX] =
+ zx_mux("decppu_aclk_mux", decppu_aclk_sel,
+ ARRAY_SIZE(decppu_aclk_sel), CLK_MUX, 6, 2);
+ clk[ZX296702_PPU_ACLK_MUX] =
+ zx_mux("ppu_aclk_mux", decppu_aclk_sel,
+ ARRAY_SIZE(decppu_aclk_sel), CLK_MUX, 8, 2);
+ clk[ZX296702_MALI400_ACLK_MUX] =
+ zx_mux("mali400_aclk_mux", decppu_aclk_sel,
+ ARRAY_SIZE(decppu_aclk_sel), CLK_MUX, 12, 2);
+ clk[ZX296702_VOU_ACLK_MUX] =
+ zx_mux("vou_aclk_mux", decppu_aclk_sel,
+ ARRAY_SIZE(decppu_aclk_sel), CLK_MUX, 10, 2);
+ clk[ZX296702_VOU_MAIN_WCLK_MUX] =
+ zx_mux("vou_main_wclk_mux", vou_main_wclk_sel,
+ ARRAY_SIZE(vou_main_wclk_sel), CLK_MUX, 14, 2);
+ clk[ZX296702_VOU_AUX_WCLK_MUX] =
+ zx_mux("vou_aux_wclk_mux", vou_main_wclk_sel,
+ ARRAY_SIZE(vou_main_wclk_sel), CLK_MUX, 16, 2);
+ clk[ZX296702_VOU_SCALER_WCLK_MUX] =
+ zx_mux("vou_scaler_wclk_mux", vou_scaler_wclk_sel,
+ ARRAY_SIZE(vou_scaler_wclk_sel), CLK_MUX,
+ 18, 2);
+ clk[ZX296702_R2D_ACLK_MUX] =
+ zx_mux("r2d_aclk_mux", decppu_aclk_sel,
+ ARRAY_SIZE(decppu_aclk_sel), CLK_MUX, 20, 2);
+ clk[ZX296702_R2D_WCLK_MUX] =
+ zx_mux("r2d_wclk_mux", r2d_wclk_sel,
+ ARRAY_SIZE(r2d_wclk_sel), CLK_MUX, 22, 2);
+
+ /* other clock */
+ clk[ZX296702_CLK_50] =
+ clk_register_fixed_factor(NULL, "clk_50", "pll_mac_1000M",
+ 0, 1, 20);
+ clk[ZX296702_CLK_25] =
+ clk_register_fixed_factor(NULL, "clk_25", "pll_mac_1000M",
+ 0, 1, 40);
+ clk[ZX296702_CLK_12] =
+ clk_register_fixed_factor(NULL, "clk_12", "pll_mm1_72M",
+ 0, 1, 6);
+ clk[ZX296702_CLK_16M384] =
+ clk_register_fixed_factor(NULL, "clk_16M384",
+ "pll_audio_294M912", 0, 1, 18);
+ clk[ZX296702_CLK_32K768] =
+ clk_register_fixed_factor(NULL, "clk_32K768", "clk_16M384",
+ 0, 1, 500);
+ clk[ZX296702_SEC_WCLK_DIV] =
+ zx_divtbl("sec_wclk_div", "pll_lsp_104M", CLK_DIV, 6, 3,
+ sec_wclk_divider);
+ clk[ZX296702_DDR_WCLK_MUX] =
+ zx_mux("ddr_wclk_mux", ddr_wclk_sel,
+ ARRAY_SIZE(ddr_wclk_sel), CLK_MUX, 24, 2);
+ clk[ZX296702_NAND_WCLK_MUX] =
+ zx_mux("nand_wclk_mux", nand_wclk_sel,
+ ARRAY_SIZE(nand_wclk_sel), CLK_MUX, 24, 2);
+ clk[ZX296702_LSP_26_WCLK_MUX] =
+ zx_mux("lsp_26_wclk_mux", lsp_26_wclk_sel,
+ ARRAY_SIZE(lsp_26_wclk_sel), CLK_MUX, 27, 1);
+
+ /* gates */
+ clk[ZX296702_A9_AS0_ACLK] =
+ zx_gate("a9_as0_aclk", "matrix_aclk", CLK_EN0, 0);
+ clk[ZX296702_A9_AS1_ACLK] =
+ zx_gate("a9_as1_aclk", "a9_as1_aclk_div", CLK_EN0, 1);
+ clk[ZX296702_A9_TRACE_CLKIN] =
+ zx_gate("a9_trace_clkin", "a9_trace_clkin_mux", CLK_EN0, 2);
+ clk[ZX296702_DECPPU_AXI_M_ACLK] =
+ zx_gate("decppu_axi_m_aclk", "decppu_aclk_mux", CLK_EN0, 3);
+ clk[ZX296702_DECPPU_AHB_S_HCLK] =
+ zx_gate("decppu_ahb_s_hclk", "main_hclk", CLK_EN0, 4);
+ clk[ZX296702_PPU_AXI_M_ACLK] =
+ zx_gate("ppu_axi_m_aclk", "ppu_aclk_mux", CLK_EN0, 5);
+ clk[ZX296702_PPU_AHB_S_HCLK] =
+ zx_gate("ppu_ahb_s_hclk", "main_hclk", CLK_EN0, 6);
+ clk[ZX296702_VOU_AXI_M_ACLK] =
+ zx_gate("vou_axi_m_aclk", "vou_aclk_mux", CLK_EN0, 7);
+ clk[ZX296702_VOU_APB_PCLK] =
+ zx_gate("vou_apb_pclk", "main_pclk", CLK_EN0, 8);
+ clk[ZX296702_VOU_MAIN_CHANNEL_WCLK] =
+ zx_gate("vou_main_channel_wclk", "vou_main_wclk_mux",
+ CLK_EN0, 9);
+ clk[ZX296702_VOU_AUX_CHANNEL_WCLK] =
+ zx_gate("vou_aux_channel_wclk", "vou_aux_wclk_mux",
+ CLK_EN0, 10);
+ clk[ZX296702_VOU_HDMI_OSCLK_CEC] =
+ zx_gate("vou_hdmi_osclk_cec", "clk_2", CLK_EN0, 11);
+ clk[ZX296702_VOU_SCALER_WCLK] =
+ zx_gate("vou_scaler_wclk", "vou_scaler_wclk_mux", CLK_EN0, 12);
+ clk[ZX296702_MALI400_AXI_M_ACLK] =
+ zx_gate("mali400_axi_m_aclk", "mali400_aclk_mux", CLK_EN0, 13);
+ clk[ZX296702_MALI400_APB_PCLK] =
+ zx_gate("mali400_apb_pclk", "main_pclk", CLK_EN0, 14);
+ clk[ZX296702_R2D_WCLK] =
+ zx_gate("r2d_wclk", "r2d_wclk_mux", CLK_EN0, 15);
+ clk[ZX296702_R2D_AXI_M_ACLK] =
+ zx_gate("r2d_axi_m_aclk", "r2d_aclk_mux", CLK_EN0, 16);
+ clk[ZX296702_R2D_AHB_HCLK] =
+ zx_gate("r2d_ahb_hclk", "main_hclk", CLK_EN0, 17);
+ clk[ZX296702_DDR3_AXI_S0_ACLK] =
+ zx_gate("ddr3_axi_s0_aclk", "matrix_aclk", CLK_EN0, 18);
+ clk[ZX296702_DDR3_APB_PCLK] =
+ zx_gate("ddr3_apb_pclk", "main_pclk", CLK_EN0, 19);
+ clk[ZX296702_DDR3_WCLK] =
+ zx_gate("ddr3_wclk", "ddr_wclk_mux", CLK_EN0, 20);
+ clk[ZX296702_USB20_0_AHB_HCLK] =
+ zx_gate("usb20_0_ahb_hclk", "main_hclk", CLK_EN0, 21);
+ clk[ZX296702_USB20_0_EXTREFCLK] =
+ zx_gate("usb20_0_extrefclk", "clk_12", CLK_EN0, 22);
+ clk[ZX296702_USB20_1_AHB_HCLK] =
+ zx_gate("usb20_1_ahb_hclk", "main_hclk", CLK_EN0, 23);
+ clk[ZX296702_USB20_1_EXTREFCLK] =
+ zx_gate("usb20_1_extrefclk", "clk_12", CLK_EN0, 24);
+ clk[ZX296702_USB20_2_AHB_HCLK] =
+ zx_gate("usb20_2_ahb_hclk", "main_hclk", CLK_EN0, 25);
+ clk[ZX296702_USB20_2_EXTREFCLK] =
+ zx_gate("usb20_2_extrefclk", "clk_12", CLK_EN0, 26);
+ clk[ZX296702_GMAC_AXI_M_ACLK] =
+ zx_gate("gmac_axi_m_aclk", "matrix_aclk", CLK_EN0, 27);
+ clk[ZX296702_GMAC_APB_PCLK] =
+ zx_gate("gmac_apb_pclk", "main_pclk", CLK_EN0, 28);
+ clk[ZX296702_GMAC_125_CLKIN] =
+ zx_gate("gmac_125_clkin", "clk_125", CLK_EN0, 29);
+ clk[ZX296702_GMAC_RMII_CLKIN] =
+ zx_gate("gmac_rmii_clkin", "clk_50", CLK_EN0, 30);
+ clk[ZX296702_GMAC_25M_CLK] =
+ zx_gate("gmac_25M_clk", "clk_25", CLK_EN0, 31);
+ clk[ZX296702_NANDFLASH_AHB_HCLK] =
+ zx_gate("nandflash_ahb_hclk", "main_hclk", CLK_EN1, 0);
+ clk[ZX296702_NANDFLASH_WCLK] =
+ zx_gate("nandflash_wclk", "nand_wclk_mux", CLK_EN1, 1);
+ clk[ZX296702_LSP0_APB_PCLK] =
+ zx_gate("lsp0_apb_pclk", "main_pclk", CLK_EN1, 2);
+ clk[ZX296702_LSP0_AHB_HCLK] =
+ zx_gate("lsp0_ahb_hclk", "main_hclk", CLK_EN1, 3);
+ clk[ZX296702_LSP0_26M_WCLK] =
+ zx_gate("lsp0_26M_wclk", "lsp_26_wclk_mux", CLK_EN1, 4);
+ clk[ZX296702_LSP0_104M_WCLK] =
+ zx_gate("lsp0_104M_wclk", "pll_lsp_104M", CLK_EN1, 5);
+ clk[ZX296702_LSP0_16M384_WCLK] =
+ zx_gate("lsp0_16M384_wclk", "clk_16M384", CLK_EN1, 6);
+ clk[ZX296702_LSP1_APB_PCLK] =
+ zx_gate("lsp1_apb_pclk", "main_pclk", CLK_EN1, 7);
+ /* FIXME: wclk enable bit is bit8. We hack it as reserved 31 for
+ * UART does not work after parent clk is disabled/enabled */
+ clk[ZX296702_LSP1_26M_WCLK] =
+ zx_gate("lsp1_26M_wclk", "lsp_26_wclk_mux", CLK_EN1, 31);
+ clk[ZX296702_LSP1_104M_WCLK] =
+ zx_gate("lsp1_104M_wclk", "pll_lsp_104M", CLK_EN1, 9);
+ clk[ZX296702_LSP1_32K_CLK] =
+ zx_gate("lsp1_32K_clk", "clk_32K768", CLK_EN1, 10);
+ clk[ZX296702_AON_HCLK] =
+ zx_gate("aon_hclk", "main_hclk", CLK_EN1, 11);
+ clk[ZX296702_SYS_CTRL_PCLK] =
+ zx_gate("sys_ctrl_pclk", "main_pclk", CLK_EN1, 12);
+ clk[ZX296702_DMA_PCLK] =
+ zx_gate("dma_pclk", "main_pclk", CLK_EN1, 13);
+ clk[ZX296702_DMA_ACLK] =
+ zx_gate("dma_aclk", "matrix_aclk", CLK_EN1, 14);
+ clk[ZX296702_SEC_HCLK] =
+ zx_gate("sec_hclk", "main_hclk", CLK_EN1, 15);
+ clk[ZX296702_AES_WCLK] =
+ zx_gate("aes_wclk", "sec_wclk_div", CLK_EN1, 16);
+ clk[ZX296702_DES_WCLK] =
+ zx_gate("des_wclk", "sec_wclk_div", CLK_EN1, 17);
+ clk[ZX296702_IRAM_ACLK] =
+ zx_gate("iram_aclk", "matrix_aclk", CLK_EN1, 18);
+ clk[ZX296702_IROM_ACLK] =
+ zx_gate("irom_aclk", "matrix_aclk", CLK_EN1, 19);
+ clk[ZX296702_BOOT_CTRL_HCLK] =
+ zx_gate("boot_ctrl_hclk", "main_hclk", CLK_EN1, 20);
+ clk[ZX296702_EFUSE_CLK_30] =
+ zx_gate("efuse_clk_30", "osc", CLK_EN1, 21);
+
+ /* TODO: add VOU Local clocks */
+ clk[ZX296702_VOU_MAIN_CHANNEL_DIV] =
+ zx_div("vou_main_channel_div", "vou_main_channel_wclk",
+ VOU_LOCAL_DIV2_SET, 1, 1);
+ clk[ZX296702_VOU_AUX_CHANNEL_DIV] =
+ zx_div("vou_aux_channel_div", "vou_aux_channel_wclk",
+ VOU_LOCAL_DIV2_SET, 0, 1);
+ clk[ZX296702_VOU_TV_ENC_HD_DIV] =
+ zx_div("vou_tv_enc_hd_div", "vou_tv_enc_hd_mux",
+ VOU_LOCAL_DIV2_SET, 3, 1);
+ clk[ZX296702_VOU_TV_ENC_SD_DIV] =
+ zx_div("vou_tv_enc_sd_div", "vou_tv_enc_sd_mux",
+ VOU_LOCAL_DIV2_SET, 2, 1);
+ clk[ZX296702_VL0_MUX] =
+ zx_mux("vl0_mux", vl0_sel, ARRAY_SIZE(vl0_sel),
+ VOU_LOCAL_CLKSEL, 8, 1);
+ clk[ZX296702_VL1_MUX] =
+ zx_mux("vl1_mux", vl0_sel, ARRAY_SIZE(vl0_sel),
+ VOU_LOCAL_CLKSEL, 9, 1);
+ clk[ZX296702_VL2_MUX] =
+ zx_mux("vl2_mux", vl0_sel, ARRAY_SIZE(vl0_sel),
+ VOU_LOCAL_CLKSEL, 10, 1);
+ clk[ZX296702_GL0_MUX] =
+ zx_mux("gl0_mux", vl0_sel, ARRAY_SIZE(vl0_sel),
+ VOU_LOCAL_CLKSEL, 5, 1);
+ clk[ZX296702_GL1_MUX] =
+ zx_mux("gl1_mux", vl0_sel, ARRAY_SIZE(vl0_sel),
+ VOU_LOCAL_CLKSEL, 6, 1);
+ clk[ZX296702_GL2_MUX] =
+ zx_mux("gl2_mux", vl0_sel, ARRAY_SIZE(vl0_sel),
+ VOU_LOCAL_CLKSEL, 7, 1);
+ clk[ZX296702_WB_MUX] =
+ zx_mux("wb_mux", vl0_sel, ARRAY_SIZE(vl0_sel),
+ VOU_LOCAL_CLKSEL, 11, 1);
+ clk[ZX296702_HDMI_MUX] =
+ zx_mux("hdmi_mux", hdmi_sel, ARRAY_SIZE(hdmi_sel),
+ VOU_LOCAL_CLKSEL, 4, 1);
+ clk[ZX296702_VOU_TV_ENC_HD_MUX] =
+ zx_mux("vou_tv_enc_hd_mux", hdmi_sel, ARRAY_SIZE(hdmi_sel),
+ VOU_LOCAL_CLKSEL, 3, 1);
+ clk[ZX296702_VOU_TV_ENC_SD_MUX] =
+ zx_mux("vou_tv_enc_sd_mux", hdmi_sel, ARRAY_SIZE(hdmi_sel),
+ VOU_LOCAL_CLKSEL, 2, 1);
+ clk[ZX296702_VL0_CLK] =
+ zx_gate("vl0_clk", "vl0_mux", VOU_LOCAL_CLKEN, 8);
+ clk[ZX296702_VL1_CLK] =
+ zx_gate("vl1_clk", "vl1_mux", VOU_LOCAL_CLKEN, 9);
+ clk[ZX296702_VL2_CLK] =
+ zx_gate("vl2_clk", "vl2_mux", VOU_LOCAL_CLKEN, 10);
+ clk[ZX296702_GL0_CLK] =
+ zx_gate("gl0_clk", "gl0_mux", VOU_LOCAL_CLKEN, 5);
+ clk[ZX296702_GL1_CLK] =
+ zx_gate("gl1_clk", "gl1_mux", VOU_LOCAL_CLKEN, 6);
+ clk[ZX296702_GL2_CLK] =
+ zx_gate("gl2_clk", "gl2_mux", VOU_LOCAL_CLKEN, 7);
+ clk[ZX296702_WB_CLK] =
+ zx_gate("wb_clk", "wb_mux", VOU_LOCAL_CLKEN, 11);
+ clk[ZX296702_CL_CLK] =
+ zx_gate("cl_clk", "vou_main_channel_div", VOU_LOCAL_CLKEN, 12);
+ clk[ZX296702_MAIN_MIX_CLK] =
+ zx_gate("main_mix_clk", "vou_main_channel_div",
+ VOU_LOCAL_CLKEN, 4);
+ clk[ZX296702_AUX_MIX_CLK] =
+ zx_gate("aux_mix_clk", "vou_aux_channel_div",
+ VOU_LOCAL_CLKEN, 3);
+ clk[ZX296702_HDMI_CLK] =
+ zx_gate("hdmi_clk", "hdmi_mux", VOU_LOCAL_CLKEN, 2);
+ clk[ZX296702_VOU_TV_ENC_HD_DAC_CLK] =
+ zx_gate("vou_tv_enc_hd_dac_clk", "vou_tv_enc_hd_div",
+ VOU_LOCAL_CLKEN, 1);
+ clk[ZX296702_VOU_TV_ENC_SD_DAC_CLK] =
+ zx_gate("vou_tv_enc_sd_dac_clk", "vou_tv_enc_sd_div",
+ VOU_LOCAL_CLKEN, 0);
+
+ /* CA9 PERIPHCLK = a9_wclk / 2 */
+ clk[ZX296702_A9_PERIPHCLK] =
+ clk_register_fixed_factor(NULL, "a9_periphclk", "a9_wclk",
+ 0, 1, 2);
+
+ for (i = 0; i < ARRAY_SIZE(topclk); i++) {
+ if (IS_ERR(clk[i])) {
+ pr_err("zx296702 clk %d: register failed with %ld\n",
+ i, PTR_ERR(clk[i]));
+ return;
+ }
+ }
+
+ topclk_data.clks = topclk;
+ topclk_data.clk_num = ARRAY_SIZE(topclk);
+ of_clk_add_provider(np, of_clk_src_onecell_get, &topclk_data);
+}
+CLK_OF_DECLARE(zx296702_top_clk, "zte,zx296702-topcrm-clk",
+ zx296702_top_clocks_init);
+
+static void __init zx296702_lsp0_clocks_init(struct device_node *np)
+{
+ struct clk **clk = lsp0clk;
+ int i;
+
+ lsp0crpm_base = of_iomap(np, 0);
+ WARN_ON(!lsp0crpm_base);
+
+ /* SDMMC1 */
+ clk[ZX296702_SDMMC1_WCLK_MUX] =
+ zx_mux("sdmmc1_wclk_mux", sdmmc1_wclk_sel,
+ ARRAY_SIZE(sdmmc1_wclk_sel), CLK_SDMMC1, 4, 1);
+ clk[ZX296702_SDMMC1_WCLK_DIV] =
+ zx_div("sdmmc1_wclk_div", "sdmmc1_wclk_mux", CLK_SDMMC1, 12, 4);
+ clk[ZX296702_SDMMC1_WCLK] =
+ zx_gate("sdmmc1_wclk", "sdmmc1_wclk_div", CLK_SDMMC1, 1);
+ clk[ZX296702_SDMMC1_PCLK] =
+ zx_gate("sdmmc1_pclk", "lsp0_apb_pclk", CLK_SDMMC1, 0);
+
+ clk[ZX296702_GPIO_CLK] =
+ zx_gate("gpio_clk", "lsp0_apb_pclk", CLK_GPIO, 0);
+
+ /* SPDIF */
+ clk[ZX296702_SPDIF0_WCLK_MUX] =
+ zx_mux("spdif0_wclk_mux", spdif0_wclk_sel,
+ ARRAY_SIZE(spdif0_wclk_sel), CLK_SPDIF0, 4, 1);
+ clk[ZX296702_SPDIF0_WCLK] =
+ zx_gate("spdif0_wclk", "spdif0_wclk_mux", CLK_SPDIF0, 1);
+ clk[ZX296702_SPDIF0_PCLK] =
+ zx_gate("spdif0_pclk", "lsp0_apb_pclk", CLK_SPDIF0, 0);
+
+ clk[ZX296702_SPDIF0_DIV] =
+ clk_register_zx_audio("spdif0_div", "spdif0_wclk", 0,
+ SPDIF0_DIV);
+
+ /* I2S */
+ clk[ZX296702_I2S0_WCLK_MUX] =
+ zx_mux("i2s0_wclk_mux", i2s_wclk_sel,
+ ARRAY_SIZE(i2s_wclk_sel), CLK_I2S0, 4, 1);
+ clk[ZX296702_I2S0_WCLK] =
+ zx_gate("i2s0_wclk", "i2s0_wclk_mux", CLK_I2S0, 1);
+ clk[ZX296702_I2S0_PCLK] =
+ zx_gate("i2s0_pclk", "lsp0_apb_pclk", CLK_I2S0, 0);
+
+ clk[ZX296702_I2S0_DIV] =
+ clk_register_zx_audio("i2s0_div", "i2s0_wclk", 0, I2S0_DIV);
+
+ clk[ZX296702_I2S1_WCLK_MUX] =
+ zx_mux("i2s1_wclk_mux", i2s_wclk_sel,
+ ARRAY_SIZE(i2s_wclk_sel), CLK_I2S1, 4, 1);
+ clk[ZX296702_I2S1_WCLK] =
+ zx_gate("i2s1_wclk", "i2s1_wclk_mux", CLK_I2S1, 1);
+ clk[ZX296702_I2S1_PCLK] =
+ zx_gate("i2s1_pclk", "lsp0_apb_pclk", CLK_I2S1, 0);
+
+ clk[ZX296702_I2S1_DIV] =
+ clk_register_zx_audio("i2s1_div", "i2s1_wclk", 0, I2S1_DIV);
+
+ clk[ZX296702_I2S2_WCLK_MUX] =
+ zx_mux("i2s2_wclk_mux", i2s_wclk_sel,
+ ARRAY_SIZE(i2s_wclk_sel), CLK_I2S2, 4, 1);
+ clk[ZX296702_I2S2_WCLK] =
+ zx_gate("i2s2_wclk", "i2s2_wclk_mux", CLK_I2S2, 1);
+ clk[ZX296702_I2S2_PCLK] =
+ zx_gate("i2s2_pclk", "lsp0_apb_pclk", CLK_I2S2, 0);
+
+ clk[ZX296702_I2S2_DIV] =
+ clk_register_zx_audio("i2s2_div", "i2s2_wclk", 0, I2S2_DIV);
+
+ for (i = 0; i < ARRAY_SIZE(lsp0clk); i++) {
+ if (IS_ERR(clk[i])) {
+ pr_err("zx296702 clk %d: register failed with %ld\n",
+ i, PTR_ERR(clk[i]));
+ return;
+ }
+ }
+
+ lsp0clk_data.clks = lsp0clk;
+ lsp0clk_data.clk_num = ARRAY_SIZE(lsp0clk);
+ of_clk_add_provider(np, of_clk_src_onecell_get, &lsp0clk_data);
+}
+CLK_OF_DECLARE(zx296702_lsp0_clk, "zte,zx296702-lsp0crpm-clk",
+ zx296702_lsp0_clocks_init);
+
+static void __init zx296702_lsp1_clocks_init(struct device_node *np)
+{
+ struct clk **clk = lsp1clk;
+ int i;
+
+ lsp1crpm_base = of_iomap(np, 0);
+ WARN_ON(!lsp1crpm_base);
+
+ /* UART0 */
+ clk[ZX296702_UART0_WCLK_MUX] =
+ zx_mux("uart0_wclk_mux", uart_wclk_sel,
+ ARRAY_SIZE(uart_wclk_sel), CLK_UART0, 4, 1);
+ /* FIXME: uart wclk enable bit is bit1 in. We hack it as reserved 31 for
+ * UART does not work after parent clk is disabled/enabled */
+ clk[ZX296702_UART0_WCLK] =
+ zx_gate("uart0_wclk", "uart0_wclk_mux", CLK_UART0, 31);
+ clk[ZX296702_UART0_PCLK] =
+ zx_gate("uart0_pclk", "lsp1_apb_pclk", CLK_UART0, 0);
+
+ /* UART1 */
+ clk[ZX296702_UART1_WCLK_MUX] =
+ zx_mux("uart1_wclk_mux", uart_wclk_sel,
+ ARRAY_SIZE(uart_wclk_sel), CLK_UART1, 4, 1);
+ clk[ZX296702_UART1_WCLK] =
+ zx_gate("uart1_wclk", "uart1_wclk_mux", CLK_UART1, 1);
+ clk[ZX296702_UART1_PCLK] =
+ zx_gate("uart1_pclk", "lsp1_apb_pclk", CLK_UART1, 0);
+
+ /* SDMMC0 */
+ clk[ZX296702_SDMMC0_WCLK_MUX] =
+ zx_mux("sdmmc0_wclk_mux", sdmmc0_wclk_sel,
+ ARRAY_SIZE(sdmmc0_wclk_sel), CLK_SDMMC0, 4, 1);
+ clk[ZX296702_SDMMC0_WCLK_DIV] =
+ zx_div("sdmmc0_wclk_div", "sdmmc0_wclk_mux", CLK_SDMMC0, 12, 4);
+ clk[ZX296702_SDMMC0_WCLK] =
+ zx_gate("sdmmc0_wclk", "sdmmc0_wclk_div", CLK_SDMMC0, 1);
+ clk[ZX296702_SDMMC0_PCLK] =
+ zx_gate("sdmmc0_pclk", "lsp1_apb_pclk", CLK_SDMMC0, 0);
+
+ clk[ZX296702_SPDIF1_WCLK_MUX] =
+ zx_mux("spdif1_wclk_mux", spdif1_wclk_sel,
+ ARRAY_SIZE(spdif1_wclk_sel), CLK_SPDIF1, 4, 1);
+ clk[ZX296702_SPDIF1_WCLK] =
+ zx_gate("spdif1_wclk", "spdif1_wclk_mux", CLK_SPDIF1, 1);
+ clk[ZX296702_SPDIF1_PCLK] =
+ zx_gate("spdif1_pclk", "lsp1_apb_pclk", CLK_SPDIF1, 0);
+
+ clk[ZX296702_SPDIF1_DIV] =
+ clk_register_zx_audio("spdif1_div", "spdif1_wclk", 0,
+ SPDIF1_DIV);
+
+ for (i = 0; i < ARRAY_SIZE(lsp1clk); i++) {
+ if (IS_ERR(clk[i])) {
+ pr_err("zx296702 clk %d: register failed with %ld\n",
+ i, PTR_ERR(clk[i]));
+ return;
+ }
+ }
+
+ lsp1clk_data.clks = lsp1clk;
+ lsp1clk_data.clk_num = ARRAY_SIZE(lsp1clk);
+ of_clk_add_provider(np, of_clk_src_onecell_get, &lsp1clk_data);
+}
+CLK_OF_DECLARE(zx296702_lsp1_clk, "zte,zx296702-lsp1crpm-clk",
+ zx296702_lsp1_clocks_init);
diff --git a/drivers/clk/zte/clk.c b/drivers/clk/zte/clk.c
new file mode 100644
index 0000000..7c73c53
--- /dev/null
+++ b/drivers/clk/zte/clk.c
@@ -0,0 +1,309 @@
+/*
+ * Copyright 2014 Linaro Ltd.
+ * Copyright (C) 2014 ZTE Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <asm/div64.h>
+
+#include "clk.h"
+
+#define to_clk_zx_pll(_hw) container_of(_hw, struct clk_zx_pll, hw)
+#define to_clk_zx_audio(_hw) container_of(_hw, struct clk_zx_audio, hw)
+
+#define CFG0_CFG1_OFFSET 4
+#define LOCK_FLAG BIT(30)
+#define POWER_DOWN BIT(31)
+
+static int rate_to_idx(struct clk_zx_pll *zx_pll, unsigned long rate)
+{
+ const struct zx_pll_config *config = zx_pll->lookup_table;
+ int i;
+
+ for (i = 0; i < zx_pll->count; i++) {
+ if (config[i].rate > rate)
+ return i > 0 ? i - 1 : 0;
+
+ if (config[i].rate == rate)
+ return i;
+ }
+
+ return i - 1;
+}
+
+static int hw_to_idx(struct clk_zx_pll *zx_pll)
+{
+ const struct zx_pll_config *config = zx_pll->lookup_table;
+ u32 hw_cfg0, hw_cfg1;
+ int i;
+
+ hw_cfg0 = readl_relaxed(zx_pll->reg_base);
+ hw_cfg1 = readl_relaxed(zx_pll->reg_base + CFG0_CFG1_OFFSET);
+
+ /* For matching the value in lookup table */
+ hw_cfg0 &= ~LOCK_FLAG;
+ hw_cfg0 |= POWER_DOWN;
+
+ for (i = 0; i < zx_pll->count; i++) {
+ if (hw_cfg0 == config[i].cfg0 && hw_cfg1 == config[i].cfg1)
+ return i;
+ }
+
+ return -EINVAL;
+}
+
+static unsigned long zx_pll_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_zx_pll *zx_pll = to_clk_zx_pll(hw);
+ int idx;
+
+ idx = hw_to_idx(zx_pll);
+ if (unlikely(idx == -EINVAL))
+ return 0;
+
+ return zx_pll->lookup_table[idx].rate;
+}
+
+static long zx_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *prate)
+{
+ struct clk_zx_pll *zx_pll = to_clk_zx_pll(hw);
+ int idx;
+
+ idx = rate_to_idx(zx_pll, rate);
+
+ return zx_pll->lookup_table[idx].rate;
+}
+
+static int zx_pll_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ /* Assume current cpu is not running on current PLL */
+ struct clk_zx_pll *zx_pll = to_clk_zx_pll(hw);
+ const struct zx_pll_config *config;
+ int idx;
+
+ idx = rate_to_idx(zx_pll, rate);
+ config = &zx_pll->lookup_table[idx];
+
+ writel_relaxed(config->cfg0, zx_pll->reg_base);
+ writel_relaxed(config->cfg1, zx_pll->reg_base + CFG0_CFG1_OFFSET);
+
+ return 0;
+}
+
+static int zx_pll_enable(struct clk_hw *hw)
+{
+ struct clk_zx_pll *zx_pll = to_clk_zx_pll(hw);
+ u32 reg;
+
+ reg = readl_relaxed(zx_pll->reg_base);
+ writel_relaxed(reg & ~POWER_DOWN, zx_pll->reg_base);
+
+ return readl_relaxed_poll_timeout(zx_pll->reg_base, reg,
+ reg & LOCK_FLAG, 0, 100);
+}
+
+static void zx_pll_disable(struct clk_hw *hw)
+{
+ struct clk_zx_pll *zx_pll = to_clk_zx_pll(hw);
+ u32 reg;
+
+ reg = readl_relaxed(zx_pll->reg_base);
+ writel_relaxed(reg | POWER_DOWN, zx_pll->reg_base);
+}
+
+static int zx_pll_is_enabled(struct clk_hw *hw)
+{
+ struct clk_zx_pll *zx_pll = to_clk_zx_pll(hw);
+ u32 reg;
+
+ reg = readl_relaxed(zx_pll->reg_base);
+
+ return !(reg & POWER_DOWN);
+}
+
+static const struct clk_ops zx_pll_ops = {
+ .recalc_rate = zx_pll_recalc_rate,
+ .round_rate = zx_pll_round_rate,
+ .set_rate = zx_pll_set_rate,
+ .enable = zx_pll_enable,
+ .disable = zx_pll_disable,
+ .is_enabled = zx_pll_is_enabled,
+};
+
+struct clk *clk_register_zx_pll(const char *name, const char *parent_name,
+ unsigned long flags, void __iomem *reg_base,
+ const struct zx_pll_config *lookup_table,
+ int count, spinlock_t *lock)
+{
+ struct clk_zx_pll *zx_pll;
+ struct clk *clk;
+ struct clk_init_data init;
+
+ zx_pll = kzalloc(sizeof(*zx_pll), GFP_KERNEL);
+ if (!zx_pll)
+ return ERR_PTR(-ENOMEM);
+
+ init.name = name;
+ init.ops = &zx_pll_ops;
+ init.flags = flags;
+ init.parent_names = parent_name ? &parent_name : NULL;
+ init.num_parents = parent_name ? 1 : 0;
+
+ zx_pll->reg_base = reg_base;
+ zx_pll->lookup_table = lookup_table;
+ zx_pll->count = count;
+ zx_pll->lock = lock;
+ zx_pll->hw.init = &init;
+
+ clk = clk_register(NULL, &zx_pll->hw);
+ if (IS_ERR(clk))
+ kfree(zx_pll);
+
+ return clk;
+}
+
+#define BPAR 1000000
+static u32 calc_reg(u32 parent_rate, u32 rate)
+{
+ u32 sel, integ, fra_div, tmp;
+ u64 tmp64 = (u64)parent_rate * BPAR;
+
+ do_div(tmp64, rate);
+ integ = (u32)tmp64 / BPAR;
+ integ = integ >> 1;
+
+ tmp = (u32)tmp64 % BPAR;
+ sel = tmp / BPAR;
+
+ tmp = tmp % BPAR;
+ fra_div = tmp * 0xff / BPAR;
+ tmp = (sel << 24) | (integ << 16) | (0xff << 8) | fra_div;
+
+ /* Set I2S integer divider as 1. This bit is reserved for SPDIF
+ * and do no harm.
+ */
+ tmp |= BIT(28);
+ return tmp;
+}
+
+static u32 calc_rate(u32 reg, u32 parent_rate)
+{
+ u32 sel, integ, fra_div, tmp;
+ u64 tmp64 = (u64)parent_rate * BPAR;
+
+ tmp = reg;
+ sel = (tmp >> 24) & BIT(0);
+ integ = (tmp >> 16) & 0xff;
+ fra_div = tmp & 0xff;
+
+ tmp = fra_div * BPAR;
+ tmp = tmp / 0xff;
+ tmp += sel * BPAR;
+ tmp += 2 * integ * BPAR;
+ do_div(tmp64, tmp);
+
+ return (u32)tmp64;
+}
+
+static unsigned long zx_audio_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_zx_audio *zx_audio = to_clk_zx_audio(hw);
+ u32 reg;
+
+ reg = readl_relaxed(zx_audio->reg_base);
+ return calc_rate(reg, parent_rate);
+}
+
+static long zx_audio_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *prate)
+{
+ u32 reg;
+
+ if (rate * 2 > *prate)
+ return -EINVAL;
+
+ reg = calc_reg(*prate, rate);
+ return calc_rate(reg, *prate);
+}
+
+static int zx_audio_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clk_zx_audio *zx_audio = to_clk_zx_audio(hw);
+ u32 reg;
+
+ reg = calc_reg(parent_rate, rate);
+ writel_relaxed(reg, zx_audio->reg_base);
+
+ return 0;
+}
+
+#define ZX_AUDIO_EN BIT(25)
+static int zx_audio_enable(struct clk_hw *hw)
+{
+ struct clk_zx_audio *zx_audio = to_clk_zx_audio(hw);
+ u32 reg;
+
+ reg = readl_relaxed(zx_audio->reg_base);
+ writel_relaxed(reg & ~ZX_AUDIO_EN, zx_audio->reg_base);
+ return 0;
+}
+
+static void zx_audio_disable(struct clk_hw *hw)
+{
+ struct clk_zx_audio *zx_audio = to_clk_zx_audio(hw);
+ u32 reg;
+
+ reg = readl_relaxed(zx_audio->reg_base);
+ writel_relaxed(reg | ZX_AUDIO_EN, zx_audio->reg_base);
+}
+
+static const struct clk_ops zx_audio_ops = {
+ .recalc_rate = zx_audio_recalc_rate,
+ .round_rate = zx_audio_round_rate,
+ .set_rate = zx_audio_set_rate,
+ .enable = zx_audio_enable,
+ .disable = zx_audio_disable,
+};
+
+struct clk *clk_register_zx_audio(const char *name,
+ const char * const parent_name,
+ unsigned long flags,
+ void __iomem *reg_base)
+{
+ struct clk_zx_audio *zx_audio;
+ struct clk *clk;
+ struct clk_init_data init;
+
+ zx_audio = kzalloc(sizeof(*zx_audio), GFP_KERNEL);
+ if (!zx_audio)
+ return ERR_PTR(-ENOMEM);
+
+ init.name = name;
+ init.ops = &zx_audio_ops;
+ init.flags = flags;
+ init.parent_names = parent_name ? &parent_name : NULL;
+ init.num_parents = parent_name ? 1 : 0;
+
+ zx_audio->reg_base = reg_base;
+ zx_audio->hw.init = &init;
+
+ clk = clk_register(NULL, &zx_audio->hw);
+ if (IS_ERR(clk))
+ kfree(zx_audio);
+
+ return clk;
+}
diff --git a/drivers/clk/zte/clk.h b/drivers/clk/zte/clk.h
new file mode 100644
index 0000000..65ae08b
--- /dev/null
+++ b/drivers/clk/zte/clk.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2015 Linaro Ltd.
+ * Copyright (C) 2014 ZTE Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ZTE_CLK_H
+#define __ZTE_CLK_H
+#include <linux/clk-provider.h>
+#include <linux/spinlock.h>
+
+struct zx_pll_config {
+ unsigned long rate;
+ u32 cfg0;
+ u32 cfg1;
+};
+
+struct clk_zx_pll {
+ struct clk_hw hw;
+ void __iomem *reg_base;
+ const struct zx_pll_config *lookup_table; /* order by rate asc */
+ int count;
+ spinlock_t *lock;
+};
+
+struct clk *clk_register_zx_pll(const char *name, const char *parent_name,
+ unsigned long flags, void __iomem *reg_base,
+ const struct zx_pll_config *lookup_table, int count, spinlock_t *lock);
+
+struct clk_zx_audio {
+ struct clk_hw hw;
+ void __iomem *reg_base;
+};
+
+struct clk *clk_register_zx_audio(const char *name,
+ const char * const parent_name,
+ unsigned long flags, void __iomem *reg_base);
+#endif