From 33db2ce73e9affe9a25130b166048f5a209d4dc1 Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Tue, 28 Jan 2020 05:28:50 +0000 Subject: clk: imx: imx8mn: use imx8m_clk_hw_composite_core Use imx8m_clk_hw_composite_core to simplify code. Add new definitions, and X_SRC/CG/DIV will be alias to the new definitions for backwards compatibility Reviewed-by: Abel Vesa Signed-off-by: Peng Fan Reviewed-by: Leonard Crestez Signed-off-by: Shawn Guo --- include/dt-bindings/clock/imx8mn-clock.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'include/dt-bindings/clock/imx8mn-clock.h') diff --git a/include/dt-bindings/clock/imx8mn-clock.h b/include/dt-bindings/clock/imx8mn-clock.h index 43883fe65db5..c42a22d3cf7c 100644 --- a/include/dt-bindings/clock/imx8mn-clock.h +++ b/include/dt-bindings/clock/imx8mn-clock.h @@ -229,7 +229,9 @@ #define IMX8MN_SYS_PLL2_500M_CG 210 #define IMX8MN_CLK_SNVS_ROOT 211 +#define IMX8MN_CLK_GPU_CORE 212 +#define IMX8MN_CLK_GPU_SHADER 213 -#define IMX8MN_CLK_END 212 +#define IMX8MN_CLK_END 214 #endif -- cgit v1.2.3 From c69def88987995f5d3ea28f12febd1b2c567f511 Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Wed, 19 Feb 2020 18:17:08 +0800 Subject: clk: imx: imx8mn: fix a53 cpu clock The A53 CCM clk root only accepts input up to 1GHz, CCM A53 root signoff timing is 1Ghz, however the A53 core which sources from CCM root could run above 1GHz which voilates the CCM. There is a CORE_SEL slice before A53 core, we need configure the CORE_SEL slice source from ARM PLL, not A53 CCM clk root. The A53 CCM clk root should only be used when need to change ARM PLL frequency. Add arm_a53_core clk that could source from arm_a53_div and arm_pll_out. Configure a53 ccm root sources from 800MHz sys pll Configure a53 core sources from arm_pll_out Mark arm_a53_core as critical clk. Fixes: 96d6392b54db ("clk: imx: Add support for i.MX8MN clock driver") Reviewed-by: Jacky Bai Signed-off-by: Peng Fan Signed-off-by: Shawn Guo --- drivers/clk/imx/clk-imx8mn.c | 16 ++++++++++++---- include/dt-bindings/clock/imx8mn-clock.h | 4 +++- 2 files changed, 15 insertions(+), 5 deletions(-) (limited to 'include/dt-bindings/clock/imx8mn-clock.h') diff --git a/drivers/clk/imx/clk-imx8mn.c b/drivers/clk/imx/clk-imx8mn.c index fb47f86e35e8..83618affca8b 100644 --- a/drivers/clk/imx/clk-imx8mn.c +++ b/drivers/clk/imx/clk-imx8mn.c @@ -38,6 +38,8 @@ static const char * const imx8mn_a53_sels[] = {"osc_24m", "arm_pll_out", "sys_pl "sys_pll2_1000m", "sys_pll1_800m", "sys_pll1_400m", "audio_pll1_out", "sys_pll3_out", }; +static const char * const imx8mn_a53_core_sels[] = {"arm_a53_div", "arm_pll_out", }; + static const char * const imx8mn_gpu_core_sels[] = {"osc_24m", "gpu_pll_out", "sys_pll1_800m", "sys_pll3_out", "sys_pll2_1000m", "audio_pll1_out", "video_pll1_out", "audio_pll2_out", }; @@ -425,6 +427,9 @@ static int imx8mn_clocks_probe(struct platform_device *pdev) hws[IMX8MN_CLK_GPU_SHADER_CG] = hws[IMX8MN_CLK_GPU_SHADER]; hws[IMX8MN_CLK_GPU_SHADER_DIV] = hws[IMX8MN_CLK_GPU_SHADER]; + /* CORE SEL */ + hws[IMX8MN_CLK_A53_CORE] = imx_clk_hw_mux2_flags("arm_a53_core", base + 0x9880, 24, 1, imx8mn_a53_core_sels, ARRAY_SIZE(imx8mn_a53_core_sels), CLK_IS_CRITICAL); + /* BUS */ hws[IMX8MN_CLK_MAIN_AXI] = imx8m_clk_hw_composite_critical("main_axi", imx8mn_main_axi_sels, base + 0x8800); hws[IMX8MN_CLK_ENET_AXI] = imx8m_clk_hw_composite("enet_axi", imx8mn_enet_axi_sels, base + 0x8880); @@ -554,11 +559,14 @@ static int imx8mn_clocks_probe(struct platform_device *pdev) hws[IMX8MN_CLK_DRAM_ALT_ROOT] = imx_clk_hw_fixed_factor("dram_alt_root", "dram_alt", 1, 4); - hws[IMX8MN_CLK_ARM] = imx_clk_hw_cpu("arm", "arm_a53_div", - hws[IMX8MN_CLK_A53_DIV]->clk, - hws[IMX8MN_CLK_A53_SRC]->clk, + clk_hw_set_parent(hws[IMX8MN_CLK_A53_SRC], hws[IMX8MN_SYS_PLL1_800M]); + clk_hw_set_parent(hws[IMX8MN_CLK_A53_CORE], hws[IMX8MN_ARM_PLL_OUT]); + + hws[IMX8MN_CLK_ARM] = imx_clk_hw_cpu("arm", "arm_a53_core", + hws[IMX8MN_CLK_A53_CORE]->clk, + hws[IMX8MN_CLK_A53_CORE]->clk, hws[IMX8MN_ARM_PLL_OUT]->clk, - hws[IMX8MN_SYS_PLL1_800M]->clk); + hws[IMX8MN_CLK_A53_DIV]->clk); imx_check_clk_hws(hws, IMX8MN_CLK_END); diff --git a/include/dt-bindings/clock/imx8mn-clock.h b/include/dt-bindings/clock/imx8mn-clock.h index c42a22d3cf7c..6c4364c01c50 100644 --- a/include/dt-bindings/clock/imx8mn-clock.h +++ b/include/dt-bindings/clock/imx8mn-clock.h @@ -232,6 +232,8 @@ #define IMX8MN_CLK_GPU_CORE 212 #define IMX8MN_CLK_GPU_SHADER 213 -#define IMX8MN_CLK_END 214 +#define IMX8MN_CLK_A53_CORE 214 + +#define IMX8MN_CLK_END 215 #endif -- cgit v1.2.3