[U-Boot] [PATCH 3/5] rk_pwm: use clock framework API to get module clock

[Kever Yang]

This patch use clock API instead of hardcode for get pwm clock.

Signed-off-by: Kever Yang <kever.y...@rock-chips.com>
---

 drivers/pwm/rk_pwm.c | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/drivers/pwm/rk_pwm.c b/drivers/pwm/rk_pwm.c
index 2d289a4..d69aab5 100644
--- a/drivers/pwm/rk_pwm.c
+++ b/drivers/pwm/rk_pwm.c
@@ -6,6 +6,7 @@
  */
 
 #include <common.h>
+#include <clk.h>
 #include <div64.h>
 #include <dm.h>
 #include <pwm.h>
@@ -13,9 +14,9 @@
 #include <syscon.h>
 #include <asm/io.h>
 #include <asm/arch/clock.h>
-#include <asm/arch/cru_rk3288.h>
 #include <asm/arch/grf_rk3288.h>
 #include <asm/arch/pwm.h>
+#include <asm/arch/hardware.h>
 #include <power/regulator.h>
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -23,6 +24,7 @@ DECLARE_GLOBAL_DATA_PTR;
 struct rk_pwm_priv {
        struct rk3288_pwm *regs;
        struct rk3288_grf *grf;
+       ulong freq;
 };
 
 static int rk_pwm_set_config(struct udevice *dev, uint channel, uint period_ns,
@@ -38,8 +40,8 @@ static int rk_pwm_set_config(struct udevice *dev, uint 
channel, uint period_ns,
                RK_PWM_DISABLE,
                &regs->ctrl);
 
-       period = lldiv((uint64_t)(PD_BUS_PCLK_HZ / 1000) * period_ns, 1000000);
-       duty = lldiv((uint64_t)(PD_BUS_PCLK_HZ / 1000) * duty_ns, 1000000);
+       period = lldiv((uint64_t)(priv->freq / 1000) * period_ns, 1000000);
+       duty = lldiv((uint64_t)(priv->freq / 1000) * duty_ns, 1000000);
 
        writel(period, &regs->period_hpr);
        writel(duty, &regs->duty_lpr);
@@ -76,9 +78,18 @@ static int rk_pwm_ofdata_to_platdata(struct udevice *dev)
 static int rk_pwm_probe(struct udevice *dev)
 {
        struct rk_pwm_priv *priv = dev_get_priv(dev);
+       struct clk clk;
+       int ret = 0;
 
        rk_setreg(&priv->grf->soc_con2, 1 << 0);
 
+       ret = clk_get_by_index(dev, 0, &clk);
+       if (ret < 0) {
+               printf("%s get clock fail!\n", __func__);
+               return -EINVAL;
+       }
+       priv->freq = clk_get_rate(&clk);
+
        return 0;
 }
 
-- 
1.9.1


_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot