From: Anson Huang Date: Thu, 11 Sep 2014 03:29:40 +0000 (+0800) Subject: ARM: imx: add gpt_3m clk for i.mx6qdl X-Git-Tag: firefly_0821_release~176^2~3111^2~14^2~4 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=6f11c69d35d5b1db0ec4cfccd0188b00eada3ad3;p=firefly-linux-kernel-4.4.55.git ARM: imx: add gpt_3m clk for i.mx6qdl Add gpt_3m clock for i.mx6qdl, as gpt can source clock from OSC, some i.MX6 series SOCs has fixed divider of 8 for gpt clock, so here add a fix clk of gpt_3m. i.MX6Q TO1.0 has no gpt_3m option, so force it to be from ipg_per. Signed-off-by: Anson Huang Signed-off-by: Shawn Guo --- diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c index 4f8ce60a2e90..1412daf4a714 100644 --- a/arch/arm/mach-imx/clk-imx6q.c +++ b/arch/arm/mach-imx/clk-imx6q.c @@ -245,6 +245,7 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node) clk[IMX6QDL_CLK_PLL3_80M] = imx_clk_fixed_factor("pll3_80m", "pll3_usb_otg", 1, 6); clk[IMX6QDL_CLK_PLL3_60M] = imx_clk_fixed_factor("pll3_60m", "pll3_usb_otg", 1, 8); clk[IMX6QDL_CLK_TWD] = imx_clk_fixed_factor("twd", "arm", 1, 2); + clk[IMX6QDL_CLK_GPT_3M] = imx_clk_fixed_factor("gpt_3m", "osc", 1, 8); if (cpu_is_imx6dl()) { clk[IMX6QDL_CLK_GPU2D_AXI] = imx_clk_fixed_factor("gpu2d_axi", "mmdc_ch0_axi_podf", 1, 1); clk[IMX6QDL_CLK_GPU3D_AXI] = imx_clk_fixed_factor("gpu3d_axi", "mmdc_ch0_axi_podf", 1, 1); @@ -461,6 +462,13 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node) clk[IMX6QDL_CLK_CKO1] = imx_clk_gate("cko1", "cko1_podf", base + 0x60, 7); clk[IMX6QDL_CLK_CKO2] = imx_clk_gate("cko2", "cko2_podf", base + 0x60, 24); + /* + * The gpt_3m clock is not available on i.MX6Q TO1.0. Let's point it + * to clock gpt_ipg_per to ease the gpt driver code. + */ + if (cpu_is_imx6q() && imx_get_soc_revision() == IMX_CHIP_REVISION_1_0) + clk[IMX6QDL_CLK_GPT_3M] = clk[IMX6QDL_CLK_GPT_IPG_PER]; + imx_check_clocks(clk, ARRAY_SIZE(clk)); clk_data.clks = clk; diff --git a/include/dt-bindings/clock/imx6qdl-clock.h b/include/dt-bindings/clock/imx6qdl-clock.h index c0d88ab013b4..ddaef8620b2c 100644 --- a/include/dt-bindings/clock/imx6qdl-clock.h +++ b/include/dt-bindings/clock/imx6qdl-clock.h @@ -247,6 +247,7 @@ #define IMX6QDL_PLL5_BYPASS 234 #define IMX6QDL_PLL6_BYPASS 235 #define IMX6QDL_PLL7_BYPASS 236 -#define IMX6QDL_CLK_END 237 +#define IMX6QDL_CLK_GPT_3M 237 +#define IMX6QDL_CLK_END 238 #endif /* __DT_BINDINGS_CLOCK_IMX6QDL_H */