serial_zynq: Migrate to Zynq clock framework
Remove hard coded frequencies and use Zynq's clock framework to obtain
the UART clock frequency.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/drivers/serial/serial_zynq.c b/drivers/serial/serial_zynq.c
index 9a1ee00..22c6bf0 100644
--- a/drivers/serial/serial_zynq.c
+++ b/drivers/serial/serial_zynq.c
@@ -10,6 +10,7 @@
#include <asm/io.h>
#include <linux/compiler.h>
#include <serial.h>
+#include <asm/arch/clk.h>
#include <asm/arch/hardware.h>
#define ZYNQ_UART_SR_TXFULL 0x00000010 /* TX FIFO full */
@@ -45,23 +46,13 @@
# define CONFIG_ZYNQ_SERIAL_BAUDRATE1 CONFIG_BAUDRATE
#endif
-#if !defined(CONFIG_ZYNQ_SERIAL_CLOCK0)
-# define CONFIG_ZYNQ_SERIAL_CLOCK0 50000000
-#endif
-#if !defined(CONFIG_ZYNQ_SERIAL_CLOCK1)
-# define CONFIG_ZYNQ_SERIAL_CLOCK1 50000000
-#endif
-
struct uart_zynq_params {
u32 baudrate;
- u32 clock;
};
static struct uart_zynq_params uart_zynq_ports_param[2] = {
[0].baudrate = CONFIG_ZYNQ_SERIAL_BAUDRATE0,
- [0].clock = CONFIG_ZYNQ_SERIAL_CLOCK0,
[1].baudrate = CONFIG_ZYNQ_SERIAL_BAUDRATE1,
- [1].clock = CONFIG_ZYNQ_SERIAL_CLOCK1,
};
/* Set up the baud rate in gd struct */
@@ -71,7 +62,7 @@
unsigned int calc_bauderror, bdiv, bgen;
unsigned long calc_baud = 0;
unsigned long baud = uart_zynq_ports_param[port].baudrate;
- unsigned long clock = uart_zynq_ports_param[port].clock;
+ unsigned long clock = get_uart_clk(port);
struct uart_zynq *regs = uart_zynq_ports[port];
/* master clock