From e7eccc7e16acfcc3e613e7c0df7e62528d24581c Mon Sep 17 00:00:00 2001 From: Nicolin Chen Date: Thu, 13 Jun 2013 19:50:56 +0800 Subject: [PATCH] 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 Signed-off-by: Shawn Guo --- arch/arm/mach-imx/clk-imx6q.c | 2 ++ arch/arm/mach-imx/mach-imx6q.c | 42 ++++++++++++++++++++++++++++++++++ 2 files changed, 44 insertions(+) diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c index 930a1a589c68..4282e99f5ca1 100644 --- 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 045e5e30b18f..f5965220a4d8 100644 --- 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); -- 2.20.1