ARM: mxs: look up timrot clock from device tree

Change call clk_get_sys() to of_clk_get() to look up timrot clock from
device tree, so that the clk_register_clkdev() call for timrot can be
saved in clock driver.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

diff --git a/arch/arm/boot/dts/imx23.dtsi b/arch/arm/boot/dts/imx23.dtsi
index 56afcf4..27ce807 100644 (file)
--- a/arch/arm/boot/dts/imx23.dtsi
+++ b/arch/arm/boot/dts/imx23.dtsi
@@ -426,6 +426,7 @@
                                compatible = "fsl,imx23-timrot", "fsl,timrot";
                                reg = <0x80068000 0x2000>;
                                interrupts = <28 29 30 31>;
+                               clocks = <&clks 28>;
                        };
 
                        auart0: serial@8006c000 {

diff --git a/arch/arm/boot/dts/imx28.dtsi b/arch/arm/boot/dts/imx28.dtsi
index 7ba4966..c2f10d3 100644 (file)
--- a/arch/arm/boot/dts/imx28.dtsi
+++ b/arch/arm/boot/dts/imx28.dtsi
@@ -838,6 +838,7 @@
                                compatible = "fsl,imx28-timrot", "fsl,timrot";
                                reg = <0x80068000 0x2000>;
                                interrupts = <48 49 50 51>;
+                               clocks = <&clks 26>;
                        };
 
                        auart0: serial@8006a000 {

diff --git a/arch/arm/mach-mxs/timer.c b/arch/arm/mach-mxs/timer.c
index fe2903d..f5142aa 100644 (file)
--- a/arch/arm/mach-mxs/timer.c
+++ b/arch/arm/mach-mxs/timer.c
@@ -247,7 +247,7 @@ static void __init mxs_timer_init(struct device_node *np)
        struct clk *timer_clk;
        int irq;
 
-       timer_clk = clk_get_sys("timrot", NULL);
+       timer_clk = of_clk_get(np, 0);
        if (IS_ERR(timer_clk)) {
                pr_err("%s: failed to get clk\n", __func__);
                return;

diff --git a/drivers/clk/mxs/clk-imx23.c b/drivers/clk/mxs/clk-imx23.c
index 291cc44..46ae6be 100644 (file)
--- a/drivers/clk/mxs/clk-imx23.c
+++ b/drivers/clk/mxs/clk-imx23.c
@@ -159,8 +159,6 @@ int __init mx23_clocks_init(void)
                of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
        }
 
-       clk_register_clkdev(clks[clk32k], NULL, "timrot");
-
        for (i = 0; i < ARRAY_SIZE(clks_init_on); i++)
                clk_prepare_enable(clks[clks_init_on[i]]);
 

diff --git a/drivers/clk/mxs/clk-imx28.c b/drivers/clk/mxs/clk-imx28.c
index d861bfd..fb30cd9 100644 (file)
--- a/drivers/clk/mxs/clk-imx28.c
+++ b/drivers/clk/mxs/clk-imx28.c
@@ -237,7 +237,6 @@ int __init mx28_clocks_init(void)
                of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
        }
 
-       clk_register_clkdev(clks[xbus], NULL, "timrot");
        clk_register_clkdev(clks[enet_out], NULL, "enet_out");
 
        for (i = 0; i < ARRAY_SIZE(clks_init_on); i++)