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authorThomas Abraham <thomas.abraham@linaro.org>2011-10-24 14:01:03 +0200
committerKukjin Kim <kgene.kim@samsung.com>2011-12-23 10:07:07 +0900
commit66fdb29d370436ca43a0637f831a2b4d92b243ca (patch)
tree2e858f07c2302e47f3b7609d567acb3101279ef2
parentfca3de6ab9bfc6f3b5beebd8f9792357c4e4d441 (diff)
ARM: EXYNOS: Add a alias for pdma clocks
PDMA controllers when instantiated from device tree are registered using amba_device_register(). The registration process enables clock to the controllers to read the peripheral id of the PDMA amba device. In case of Exynos4, the clocks to the PDMA controllers are named as 'dma' but amba_device_register() looks up the clock using the name 'apb_pclk'. Hence, alias clocks with name 'apb_pclk' clock are created for clocks with name 'dma'. Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
-rw-r--r--arch/arm/mach-exynos/clock.c35
1 files changed, 25 insertions, 10 deletions
diff --git a/arch/arm/mach-exynos/clock.c b/arch/arm/mach-exynos/clock.c
index fe1851914dac..7dee8694486a 100644
--- a/arch/arm/mach-exynos/clock.c
+++ b/arch/arm/mach-exynos/clock.c
@@ -553,16 +553,6 @@ static struct clk init_clocks_off[] = {
.enable = exynos4_clk_dac_ctrl,
.ctrlbit = (1 << 0),
}, {
- .name = "dma",
- .devname = "dma-pl330.0",
- .enable = exynos4_clk_ip_fsys_ctrl,
- .ctrlbit = (1 << 0),
- }, {
- .name = "dma",
- .devname = "dma-pl330.1",
- .enable = exynos4_clk_ip_fsys_ctrl,
- .ctrlbit = (1 << 1),
- }, {
.name = "adc",
.enable = exynos4_clk_ip_peril_ctrl,
.ctrlbit = (1 << 15),
@@ -778,6 +768,20 @@ static struct clk init_clocks[] = {
}
};
+static struct clk clk_pdma0 = {
+ .name = "dma",
+ .devname = "dma-pl330.0",
+ .enable = exynos4_clk_ip_fsys_ctrl,
+ .ctrlbit = (1 << 0),
+};
+
+static struct clk clk_pdma1 = {
+ .name = "dma",
+ .devname = "dma-pl330.1",
+ .enable = exynos4_clk_ip_fsys_ctrl,
+ .ctrlbit = (1 << 1),
+};
+
struct clk *clkset_group_list[] = {
[0] = &clk_ext_xtal_mux,
[1] = &clk_xusbxti,
@@ -1279,6 +1283,11 @@ static struct clksrc_clk *sysclks[] = {
&clk_mout_mfc1,
};
+static struct clk *clk_cdev[] = {
+ &clk_pdma0,
+ &clk_pdma1,
+};
+
static struct clksrc_clk *clksrc_cdev[] = {
&clk_sclk_uart0,
&clk_sclk_uart1,
@@ -1291,6 +1300,8 @@ static struct clk_lookup exynos4_clk_lookup[] = {
CLKDEV_INIT("exynos4210-uart.1", "clk_uart_baud0", &clk_sclk_uart1.clk),
CLKDEV_INIT("exynos4210-uart.2", "clk_uart_baud0", &clk_sclk_uart2.clk),
CLKDEV_INIT("exynos4210-uart.3", "clk_uart_baud0", &clk_sclk_uart3.clk),
+ CLKDEV_INIT("dma-pl330.0", "apb_pclk", &clk_pdma0),
+ CLKDEV_INIT("dma-pl330.1", "apb_pclk", &clk_pdma1),
};
static int xtal_rate;
@@ -1506,6 +1517,10 @@ void __init exynos4_register_clocks(void)
s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs));
s3c_register_clocks(init_clocks, ARRAY_SIZE(init_clocks));
+ s3c24xx_register_clocks(clk_cdev, ARRAY_SIZE(clk_cdev));
+ for (ptr = 0; ptr < ARRAY_SIZE(clk_cdev); ptr++)
+ s3c_disable_clocks(clk_cdev[ptr], 1);
+
s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
clkdev_add_table(exynos4_clk_lookup, ARRAY_SIZE(exynos4_clk_lookup));