ARM: clk-imx6qdl: Add clko1 configuration for imx6qdl-sabresd

WM8962 needs 24MHz clock for its MCLK, so choose PLL4 as the parent of clko1.

Signed-off-by: Nicolin Chen <b42378@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c
index 930a1a5..4282e99 100644 (file)
--- a/arch/arm/mach-imx/clk-imx6q.c
+++ b/arch/arm/mach-imx/clk-imx6q.c
@@ -550,6 +550,8 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node)
        clk_register_clkdev(clk[ahb], "ahb", NULL);
        clk_register_clkdev(clk[cko1], "cko1", NULL);
        clk_register_clkdev(clk[arm], NULL, "cpu0");
+       clk_register_clkdev(clk[pll4_post_div], "pll4_post_div", NULL);
+       clk_register_clkdev(clk[pll4_audio], "pll4_audio", NULL);
 
        if (imx6q_revision() != IMX_CHIP_REVISION_1_0) {
                clk_set_parent(clk[ldb_di0_sel], clk[pll5_video_div]);

diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index 045e5e3..f596522 100644 (file)
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -146,6 +146,45 @@ static void __init imx6q_sabrelite_init(void)
        imx6q_sabrelite_cko1_setup();
 }
 
+static void __init imx6q_sabresd_cko1_setup(void)
+{
+       struct clk *cko1_sel, *pll4, *pll4_post, *cko1;
+       unsigned long rate;
+
+       cko1_sel = clk_get_sys(NULL, "cko1_sel");
+       pll4 = clk_get_sys(NULL, "pll4_audio");
+       pll4_post = clk_get_sys(NULL, "pll4_post_div");
+       cko1 = clk_get_sys(NULL, "cko1");
+       if (IS_ERR(cko1_sel) || IS_ERR(pll4)
+                       || IS_ERR(pll4_post) || IS_ERR(cko1)) {
+               pr_err("cko1 setup failed!\n");
+               goto put_clk;
+       }
+       /*
+        * Setting pll4 at 768MHz (24MHz * 32)
+        * So its child clock can get 24MHz easily
+        */
+       clk_set_rate(pll4, 768000000);
+
+       clk_set_parent(cko1_sel, pll4_post);
+       rate = clk_round_rate(cko1, 24000000);
+       clk_set_rate(cko1, rate);
+put_clk:
+       if (!IS_ERR(cko1_sel))
+               clk_put(cko1_sel);
+       if (!IS_ERR(pll4_post))
+               clk_put(pll4_post);
+       if (!IS_ERR(pll4))
+               clk_put(pll4);
+       if (!IS_ERR(cko1))
+               clk_put(cko1);
+}
+
+static void __init imx6q_sabresd_init(void)
+{
+       imx6q_sabresd_cko1_setup();
+}
+
 static void __init imx6q_1588_init(void)
 {
        struct regmap *gpr;
@@ -166,6 +205,9 @@ static void __init imx6q_init_machine(void)
 {
        if (of_machine_is_compatible("fsl,imx6q-sabrelite"))
                imx6q_sabrelite_init();
+       else if (of_machine_is_compatible("fsl,imx6q-sabresd") ||
+                       of_machine_is_compatible("fsl,imx6dl-sabresd"))
+               imx6q_sabresd_init();
 
        of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);