Some clocks need to be always-on, but we don't really do anything with them, other than calling enable() once and telling Linux they're enabled. Unregister them to save a couple of bytes and, perhaps more importantly, allow for runtime suspend of the clock controller device, as CLK_IS_CRITICAL prevents the latter. Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx> --- drivers/clk/qcom/gcc-sm6375.c | 105 ++++++++++++++++++++++++++++++++++------ drivers/clk/qcom/gpucc-sm6375.c | 38 +++------------ 2 files changed, 97 insertions(+), 46 deletions(-) diff --git a/drivers/clk/qcom/gcc-sm6375.c b/drivers/clk/qcom/gcc-sm6375.c index 4b2de545d3f8..a8eb7a47e284 100644 --- a/drivers/clk/qcom/gcc-sm6375.c +++ b/drivers/clk/qcom/gcc-sm6375.c @@ -1743,6 +1743,21 @@ static struct clk_branch gcc_cam_throttle_rt_clk = { }, }; +static struct clk_branch gcc_camera_ahb_clk = { + .halt_reg = 0x17008, + .halt_check = BRANCH_HALT_DELAY, + .hwcg_reg = 0x17008, + .hwcg_bit = 1, + .clkr = { + .enable_reg = 0x17008, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "gcc_camera_ahb_clk", + .ops = &clk_branch2_aon_ops, + }, + }, +}; + static struct clk_branch gcc_camss_axi_clk = { .halt_reg = 0x58044, .halt_check = BRANCH_HALT, @@ -2293,6 +2308,21 @@ static struct clk_branch gcc_cfg_noc_usb3_prim_axi_clk = { }, }; +static struct clk_branch gcc_disp_ahb_clk = { + .halt_reg = 0x1700c, + .halt_check = BRANCH_HALT_VOTED, + .hwcg_reg = 0x1700c, + .hwcg_bit = 1, + .clkr = { + .enable_reg = 0x1700c, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "gcc_disp_ahb_clk", + .ops = &clk_branch2_aon_ops, + }, + }, +}; + static struct clk_regmap_div gcc_disp_gpll0_clk_src = { .reg = 0x17058, .shift = 0, @@ -2423,6 +2453,21 @@ static struct clk_branch gcc_gp3_clk = { }, }; +static struct clk_branch gcc_gpu_cfg_ahb_clk = { + .halt_reg = 0x36004, + .halt_check = BRANCH_HALT_VOTED, + .hwcg_reg = 0x36004, + .hwcg_bit = 1, + .clkr = { + .enable_reg = 0x36004, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "gcc_gpu_cfg_ahb_clk", + .ops = &clk_branch2_aon_ops, + }, + }, +}; + static struct clk_branch gcc_gpu_gpll0_clk_src = { .halt_check = BRANCH_HALT_DELAY, .clkr = { @@ -3046,6 +3091,26 @@ static struct clk_branch gcc_sdcc2_apps_clk = { }, }; +static struct clk_branch gcc_sys_noc_cpuss_ahb_clk = { + .halt_reg = 0x2b06c, + .halt_check = BRANCH_HALT_VOTED, + .hwcg_reg = 0x2b06c, + .hwcg_bit = 1, + .clkr = { + .enable_reg = 0x79004, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "gcc_sys_noc_cpuss_ahb_clk", + .parent_hws = (const struct clk_hw*[]) { + &gcc_cpuss_ahb_postdiv_clk_src.clkr.hw, + }, + .num_parents = 1, + .flags = CLK_SET_RATE_PARENT, + .ops = &clk_branch2_aon_ops, + }, + }, +}; + static struct clk_branch gcc_sys_noc_ufs_phy_axi_clk = { .halt_reg = 0x45098, .halt_check = BRANCH_HALT, @@ -3365,6 +3430,21 @@ static struct clk_branch gcc_venus_ctl_axi_clk = { }, }; +static struct clk_branch gcc_video_ahb_clk = { + .halt_reg = 0x17004, + .halt_check = BRANCH_HALT_DELAY, + .hwcg_reg = 0x17004, + .hwcg_bit = 1, + .clkr = { + .enable_reg = 0x17004, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "gcc_video_ahb_clk", + .ops = &clk_branch2_aon_ops, + }, + }, +}; + static struct clk_branch gcc_video_axi0_clk = { .halt_reg = 0x1701c, .halt_check = BRANCH_HALT_VOTED, @@ -3531,6 +3611,7 @@ static struct clk_regmap *gcc_sm6375_clocks[] = { [GCC_BOOT_ROM_AHB_CLK] = &gcc_boot_rom_ahb_clk.clkr, [GCC_CAM_THROTTLE_NRT_CLK] = &gcc_cam_throttle_nrt_clk.clkr, [GCC_CAM_THROTTLE_RT_CLK] = &gcc_cam_throttle_rt_clk.clkr, + [GCC_CAMERA_AHB_CLK] = &gcc_camera_ahb_clk.clkr, [GCC_CAMSS_AXI_CLK] = &gcc_camss_axi_clk.clkr, [GCC_CAMSS_AXI_CLK_SRC] = &gcc_camss_axi_clk_src.clkr, [GCC_CAMSS_CCI_0_CLK] = &gcc_camss_cci_0_clk.clkr, @@ -3586,6 +3667,7 @@ static struct clk_regmap *gcc_sm6375_clocks[] = { [GCC_CFG_NOC_USB3_PRIM_AXI_CLK] = &gcc_cfg_noc_usb3_prim_axi_clk.clkr, [GCC_CPUSS_AHB_CLK_SRC] = &gcc_cpuss_ahb_clk_src.clkr, [GCC_CPUSS_AHB_POSTDIV_CLK_SRC] = &gcc_cpuss_ahb_postdiv_clk_src.clkr, + [GCC_DISP_AHB_CLK] = &gcc_disp_ahb_clk.clkr, [GCC_DISP_GPLL0_CLK_SRC] = &gcc_disp_gpll0_clk_src.clkr, [GCC_DISP_GPLL0_DIV_CLK_SRC] = &gcc_disp_gpll0_div_clk_src.clkr, [GCC_DISP_HF_AXI_CLK] = &gcc_disp_hf_axi_clk.clkr, @@ -3597,6 +3679,7 @@ static struct clk_regmap *gcc_sm6375_clocks[] = { [GCC_GP2_CLK_SRC] = &gcc_gp2_clk_src.clkr, [GCC_GP3_CLK] = &gcc_gp3_clk.clkr, [GCC_GP3_CLK_SRC] = &gcc_gp3_clk_src.clkr, + [GCC_GPU_CFG_AHB_CLK] = &gcc_gpu_cfg_ahb_clk.clkr, [GCC_GPU_GPLL0_CLK_SRC] = &gcc_gpu_gpll0_clk_src.clkr, [GCC_GPU_GPLL0_DIV_CLK_SRC] = &gcc_gpu_gpll0_div_clk_src.clkr, [GCC_GPU_MEMNOC_GFX_CLK] = &gcc_gpu_memnoc_gfx_clk.clkr, @@ -3652,6 +3735,7 @@ static struct clk_regmap *gcc_sm6375_clocks[] = { [GCC_SDCC2_AHB_CLK] = &gcc_sdcc2_ahb_clk.clkr, [GCC_SDCC2_APPS_CLK] = &gcc_sdcc2_apps_clk.clkr, [GCC_SDCC2_APPS_CLK_SRC] = &gcc_sdcc2_apps_clk_src.clkr, + [GCC_SYS_NOC_CPUSS_AHB_CLK] = &gcc_sys_noc_cpuss_ahb_clk.clkr, [GCC_SYS_NOC_UFS_PHY_AXI_CLK] = &gcc_sys_noc_ufs_phy_axi_clk.clkr, [GCC_SYS_NOC_USB3_PRIM_AXI_CLK] = &gcc_sys_noc_usb3_prim_axi_clk.clkr, [GCC_UFS_PHY_AHB_CLK] = &gcc_ufs_phy_ahb_clk.clkr, @@ -3678,6 +3762,7 @@ static struct clk_regmap *gcc_sm6375_clocks[] = { [GCC_VCODEC0_AXI_CLK] = &gcc_vcodec0_axi_clk.clkr, [GCC_VENUS_AHB_CLK] = &gcc_venus_ahb_clk.clkr, [GCC_VENUS_CTL_AXI_CLK] = &gcc_venus_ctl_axi_clk.clkr, + [GCC_VIDEO_AHB_CLK] = &gcc_video_ahb_clk.clkr, [GCC_VIDEO_AXI0_CLK] = &gcc_video_axi0_clk.clkr, [GCC_VIDEO_THROTTLE_CORE_CLK] = &gcc_video_throttle_core_clk.clkr, [GCC_VIDEO_VCODEC0_SYS_CLK] = &gcc_video_vcodec0_sys_clk.clkr, @@ -3805,23 +3890,11 @@ static int gcc_sm6375_probe(struct platform_device *pdev) /* * Keep the following clocks always on: - * GCC_CAMERA_XO_CLK - * GCC_CPUSS_GNOC_CLK - * GCC_DISP_XO_CLK - * GCC_CAMERA_AHB_CLK - * GCC_DISP_AHB_CLK - * GCC_GPU_CFG_AHB_CLK - * GCC_SYS_NOC_CPUSS_AHB_CLK - * GCC_VIDEO_AHB_CLK + * GCC_CAMERA_XO_CLK, GCC_CPUSS_GNOC_CLK, GCC_DISP_XO_CLK */ - qcom_branch_set_clk_en(regmap, 0x17028); - qcom_branch_set_clk_en(regmap, 0x2b004); - qcom_branch_set_clk_en(regmap, 0x1702c); - qcom_branch_set_clk_en(regmap, 0x17008); - qcom_branch_set_clk_en(regmap, 0x1700c); - qcom_branch_set_clk_en(regmap, 0x36004); - qcom_branch_set_clk_en(regmap, 0x2b06c); - qcom_branch_set_clk_en(regmap, 0x17004); + regmap_update_bits(regmap, 0x17028, BIT(0), BIT(0)); + regmap_update_bits(regmap, 0x2b004, BIT(0), BIT(0)); + regmap_update_bits(regmap, 0x1702c, BIT(0), BIT(0)); clk_lucid_pll_configure(&gpll10, regmap, &gpll10_config); clk_lucid_pll_configure(&gpll11, regmap, &gpll11_config); diff --git a/drivers/clk/qcom/gpucc-sm6375.c b/drivers/clk/qcom/gpucc-sm6375.c index 2d863dc3d83b..d70c6ed0440b 100644 --- a/drivers/clk/qcom/gpucc-sm6375.c +++ b/drivers/clk/qcom/gpucc-sm6375.c @@ -182,20 +182,6 @@ static struct clk_rcg2 gpucc_gx_gfx3d_clk_src = { }, }; -static struct clk_branch gpucc_ahb_clk = { - .halt_reg = 0x1078, - .halt_check = BRANCH_HALT_DELAY, - .clkr = { - .enable_reg = 0x1078, - .enable_mask = BIT(0), - .hw.init = &(struct clk_init_data){ - .name = "gpucc_ahb_clk", - .flags = CLK_IS_CRITICAL, - .ops = &clk_branch2_ops, - }, - }, -}; - static struct clk_branch gpucc_cx_gfx3d_clk = { .halt_reg = 0x10a4, .halt_check = BRANCH_HALT_DELAY, @@ -293,20 +279,6 @@ static struct clk_branch gpucc_cxo_clk = { }, }; -static struct clk_branch gpucc_gx_cxo_clk = { - .halt_reg = 0x1060, - .halt_check = BRANCH_HALT_DELAY, - .clkr = { - .enable_reg = 0x1060, - .enable_mask = BIT(0), - .hw.init = &(struct clk_init_data){ - .name = "gpucc_gx_cxo_clk", - .flags = CLK_IS_CRITICAL, - .ops = &clk_branch2_ops, - }, - }, -}; - static struct clk_branch gpucc_gx_gfx3d_clk = { .halt_reg = 0x1054, .halt_check = BRANCH_HALT_DELAY, @@ -380,7 +352,6 @@ static struct gdsc gpu_gx_gdsc = { }; static struct clk_regmap *gpucc_sm6375_clocks[] = { - [GPU_CC_AHB_CLK] = &gpucc_ahb_clk.clkr, [GPU_CC_CX_GFX3D_CLK] = &gpucc_cx_gfx3d_clk.clkr, [GPU_CC_CX_GFX3D_SLV_CLK] = &gpucc_cx_gfx3d_slv_clk.clkr, [GPU_CC_CX_GMU_CLK] = &gpucc_cx_gmu_clk.clkr, @@ -388,7 +359,6 @@ static struct clk_regmap *gpucc_sm6375_clocks[] = { [GPU_CC_CXO_AON_CLK] = &gpucc_cxo_aon_clk.clkr, [GPU_CC_CXO_CLK] = &gpucc_cxo_clk.clkr, [GPU_CC_GMU_CLK_SRC] = &gpucc_gmu_clk_src.clkr, - [GPU_CC_GX_CXO_CLK] = &gpucc_gx_cxo_clk.clkr, [GPU_CC_GX_GFX3D_CLK] = &gpucc_gx_gfx3d_clk.clkr, [GPU_CC_GX_GFX3D_CLK_SRC] = &gpucc_gx_gfx3d_clk_src.clkr, [GPU_CC_GX_GMU_CLK] = &gpucc_gx_gmu_clk.clkr, @@ -454,6 +424,14 @@ static int gpucc_sm6375_probe(struct platform_device *pdev) clk_lucid_pll_configure(&gpucc_pll0, regmap, &gpucc_pll0_config); clk_lucid_pll_configure(&gpucc_pll1, regmap, &gpucc_pll1_config); + /* + * Keep clocks always enabled: + * gpucc_ahb_clk + * gpucc_gx_cxo_clk + */ + qcom_branch_set_clk_en(regmap, 0x1078); + qcom_branch_set_clk_en(regmap, 0x1060); + ret = qcom_cc_really_probe(pdev, &gpucc_sm6375_desc, regmap); pm_runtime_put(&pdev->dev); -- 2.41.0