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Message-Id: <20230717-topic-branch_aon_cleanup-v1-3-27784d27a4f4@linaro.org>
Date: Mon, 17 Jul 2023 17:19:10 +0200
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>,
Andy Gross <agross@...nel.org>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: Marijn Suijten <marijn.suijten@...ainline.org>,
linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: [PATCH 03/15] clk: qcom: gcc-sm6375: Unregister critical clocks
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@...aro.org>
---
drivers/clk/qcom/gcc-sm6375.c | 103 ++++++------------------------------------
1 file changed, 13 insertions(+), 90 deletions(-)
diff --git a/drivers/clk/qcom/gcc-sm6375.c b/drivers/clk/qcom/gcc-sm6375.c
index e94e88bdfb91..14dafea45ac9 100644
--- a/drivers/clk/qcom/gcc-sm6375.c
+++ b/drivers/clk/qcom/gcc-sm6375.c
@@ -1742,22 +1742,6 @@ 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",
- .flags = CLK_IS_CRITICAL,
- .ops = &clk_branch2_ops,
- },
- },
-};
-
static struct clk_branch gcc_camss_axi_clk = {
.halt_reg = 0x58044,
.halt_check = BRANCH_HALT,
@@ -2308,22 +2292,6 @@ 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",
- .flags = CLK_IS_CRITICAL,
- .ops = &clk_branch2_ops,
- },
- },
-};
-
static struct clk_regmap_div gcc_disp_gpll0_clk_src = {
.reg = 0x17058,
.shift = 0,
@@ -2454,22 +2422,6 @@ 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",
- .flags = CLK_IS_CRITICAL,
- .ops = &clk_branch2_ops,
- },
- },
-};
-
static struct clk_branch gcc_gpu_gpll0_clk_src = {
.halt_check = BRANCH_HALT_DELAY,
.clkr = {
@@ -3093,26 +3045,6 @@ 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_IS_CRITICAL | CLK_SET_RATE_PARENT,
- .ops = &clk_branch2_ops,
- },
- },
-};
-
static struct clk_branch gcc_sys_noc_ufs_phy_axi_clk = {
.halt_reg = 0x45098,
.halt_check = BRANCH_HALT,
@@ -3432,22 +3364,6 @@ 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",
- .flags = CLK_IS_CRITICAL,
- .ops = &clk_branch2_ops,
- },
- },
-};
-
static struct clk_branch gcc_video_axi0_clk = {
.halt_reg = 0x1701c,
.halt_check = BRANCH_HALT_VOTED,
@@ -3614,7 +3530,6 @@ 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,
@@ -3670,7 +3585,6 @@ 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,
@@ -3682,7 +3596,6 @@ 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,
@@ -3738,7 +3651,6 @@ 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,
@@ -3765,7 +3677,6 @@ 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,
@@ -3883,11 +3794,23 @@ 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_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
*/
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);
clk_lucid_pll_configure(&gpll10, regmap, &gpll10_config);
clk_lucid_pll_configure(&gpll11, regmap, &gpll11_config);
--
2.41.0
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