* [PATCH] msm_serial: fix clock rate on DMA-based uarts
@ 2012-09-07 21:45 David Brown
0 siblings, 0 replies; only message in thread
From: David Brown @ 2012-09-07 21:45 UTC (permalink / raw)
To: linux-arm-kernel
The driver explicitly requests a clock rate for the UART, but it is
off by a factor of four from the dividers that it programs into the
UART. Fix this by setting the rate to 1/4 of the current value.
Signed-off-by: David Brown <davidb@codeaurora.org>
---
drivers/tty/serial/msm_serial.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
index 8131e2c..033e0bc 100644
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -896,7 +896,7 @@ static int __init msm_serial_probe(struct platform_device *pdev)
return PTR_ERR(msm_port->clk);
if (msm_port->is_uartdm)
- clk_set_rate(msm_port->clk, 7372800);
+ clk_set_rate(msm_port->clk, 1843200);
port->uartclk = clk_get_rate(msm_port->clk);
printk(KERN_INFO "uartclk = %d\n", port->uartclk);
--
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