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authorSimon Glass <sjg@chromium.org>2016-01-21 19:44:05 -0700
committerSimon Glass <sjg@chromium.org>2016-01-21 20:42:35 -0700
commit5ddf5d7705d2c2b59282ebd37aa2018460274e89 (patch)
tree2bd2229d25df111ee9b93c384d90c94e43df7224
parent2b9fe111ec47750d9d7912246d983a7f9e096df6 (diff)
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rockchip: clk: Make rkclk_get_clk() SoC-specific
The current method assumes that clocks are numbered from 0 and we can determine a clock by its number. It is safer to use an ID in the clock's platform data to avoid the situation where another clock is bound before the one we expect. Move the existing code into rk3036 since it still works there. Add a new implementation for rk3288. Signed-off-by: Simon Glass <sjg@chromium.org>
-rw-r--r--arch/arm/mach-rockchip/Makefile1
-rw-r--r--arch/arm/mach-rockchip/common.c28
-rw-r--r--drivers/clk/clk_rk3036.c17
-rw-r--r--drivers/clk/clk_rk3288.c13
4 files changed, 30 insertions, 29 deletions
diff --git a/arch/arm/mach-rockchip/Makefile b/arch/arm/mach-rockchip/Makefile
index 1cc4a96..55567cb 100644
--- a/arch/arm/mach-rockchip/Makefile
+++ b/arch/arm/mach-rockchip/Makefile
@@ -11,6 +11,5 @@ else
obj-$(CONFIG_ROCKCHIP_RK3288) += board.o
endif
obj-y += rk_timer.o
-obj-$(CONFIG_$(SPL_)ROCKCHIP_COMMON) += common.o
obj-$(CONFIG_ROCKCHIP_RK3288) += rk3288/
obj-$(CONFIG_ROCKCHIP_RK3036) += rk3036/
diff --git a/arch/arm/mach-rockchip/common.c b/arch/arm/mach-rockchip/common.c
deleted file mode 100644
index fc7ac72..0000000
--- a/arch/arm/mach-rockchip/common.c
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * (C) Copyright 2015 Google, Inc
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <dm.h>
-#include <errno.h>
-#include <fdtdec.h>
-#include <linux/err.h>
-
-void *rockchip_get_cru(void)
-{
- struct udevice *dev;
- fdt_addr_t addr;
- int ret;
-
- ret = uclass_get_device(UCLASS_CLK, 0, &dev);
- if (ret)
- return ERR_PTR(ret);
-
- addr = dev_get_addr(dev);
- if (addr == FDT_ADDR_T_NONE)
- return ERR_PTR(-EINVAL);
-
- return (void *)addr;
-}
diff --git a/drivers/clk/clk_rk3036.c b/drivers/clk/clk_rk3036.c
index dfecc24..bd5f22a 100644
--- a/drivers/clk/clk_rk3036.c
+++ b/drivers/clk/clk_rk3036.c
@@ -57,6 +57,23 @@ static inline unsigned int log2(unsigned int value)
return fls(value) - 1;
}
+void *rockchip_get_cru(void)
+{
+ struct udevice *dev;
+ fdt_addr_t addr;
+ int ret;
+
+ ret = uclass_get_device(UCLASS_CLK, 0, &dev);
+ if (ret)
+ return ERR_PTR(ret);
+
+ addr = dev_get_addr(dev);
+ if (addr == FDT_ADDR_T_NONE)
+ return ERR_PTR(-EINVAL);
+
+ return (void *)addr;
+}
+
static int rkclk_set_pll(struct rk3036_cru *cru, enum rk_clk_id clk_id,
const struct pll_div *div)
{
diff --git a/drivers/clk/clk_rk3288.c b/drivers/clk/clk_rk3288.c
index d294788..5a8f175 100644
--- a/drivers/clk/clk_rk3288.c
+++ b/drivers/clk/clk_rk3288.c
@@ -159,6 +159,19 @@ int rkclk_get_clk(enum rk_clk_id clk_id, struct udevice **devp)
return -ENODEV;
}
+void *rockchip_get_cru(void)
+{
+ struct rk3288_clk_priv *priv;
+ struct udevice *dev;
+ int ret;
+
+ ret = rkclk_get_clk(CLK_GENERAL, &dev);
+ if (ret)
+ return ERR_PTR(ret);
+ priv = dev_get_priv(dev);
+ return priv->cru;
+}
+
static int rkclk_set_pll(struct rk3288_cru *cru, enum rk_clk_id clk_id,
const struct pll_div *div)
{