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Message-Id: <20230717-topic-branch_aon_cleanup-v1-8-27784d27a4f4@linaro.org>
Date: Mon, 17 Jul 2023 17:19:15 +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 08/15] clk: qcom: gcc-sm6115: 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-sm6115.c | 133 ++++++------------------------------------
1 file changed, 18 insertions(+), 115 deletions(-)
diff --git a/drivers/clk/qcom/gcc-sm6115.c b/drivers/clk/qcom/gcc-sm6115.c
index 033e308ff865..1b6016e7ddeb 100644
--- a/drivers/clk/qcom/gcc-sm6115.c
+++ b/drivers/clk/qcom/gcc-sm6115.c
@@ -1585,36 +1585,6 @@ 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_camera_xo_clk = {
- .halt_reg = 0x17028,
- .halt_check = BRANCH_HALT,
- .clkr = {
- .enable_reg = 0x17028,
- .enable_mask = BIT(0),
- .hw.init = &(struct clk_init_data){
- .name = "gcc_camera_xo_clk",
- .flags = CLK_IS_CRITICAL,
- .ops = &clk_branch2_ops,
- },
- },
-};
-
static struct clk_branch gcc_camss_axi_clk = {
.halt_reg = 0x58044,
.halt_check = BRANCH_HALT,
@@ -2123,38 +2093,6 @@ static struct clk_branch gcc_cfg_noc_usb3_prim_axi_clk = {
},
};
-static struct clk_branch gcc_cpuss_gnoc_clk = {
- .halt_reg = 0x2b004,
- .halt_check = BRANCH_HALT_VOTED,
- .hwcg_reg = 0x2b004,
- .hwcg_bit = 1,
- .clkr = {
- .enable_reg = 0x79004,
- .enable_mask = BIT(22),
- .hw.init = &(struct clk_init_data){
- .name = "gcc_cpuss_gnoc_clk",
- .flags = CLK_IS_CRITICAL,
- .ops = &clk_branch2_ops,
- },
- },
-};
-
-static struct clk_branch gcc_disp_ahb_clk = {
- .halt_reg = 0x1700c,
- .halt_check = BRANCH_HALT,
- .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,
@@ -2214,20 +2152,6 @@ static struct clk_branch gcc_disp_throttle_core_clk = {
},
};
-static struct clk_branch gcc_disp_xo_clk = {
- .halt_reg = 0x1702c,
- .halt_check = BRANCH_HALT,
- .clkr = {
- .enable_reg = 0x1702c,
- .enable_mask = BIT(0),
- .hw.init = &(struct clk_init_data){
- .name = "gcc_disp_xo_clk",
- .flags = CLK_IS_CRITICAL,
- .ops = &clk_branch2_ops,
- },
- },
-};
-
static struct clk_branch gcc_gp1_clk = {
.halt_reg = 0x4d000,
.halt_check = BRANCH_HALT,
@@ -2282,22 +2206,6 @@ static struct clk_branch gcc_gp3_clk = {
},
};
-static struct clk_branch gcc_gpu_cfg_ahb_clk = {
- .halt_reg = 0x36004,
- .halt_check = BRANCH_HALT,
- .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 = {
@@ -2770,22 +2678,6 @@ 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",
- .flags = CLK_IS_CRITICAL,
- .ops = &clk_branch2_ops,
- },
- },
-};
-
static struct clk_branch gcc_sys_noc_ufs_phy_axi_clk = {
.halt_reg = 0x45098,
.halt_check = BRANCH_HALT,
@@ -3271,8 +3163,6 @@ static struct clk_regmap *gcc_sm6115_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_CAMERA_XO_CLK] = &gcc_camera_xo_clk.clkr,
[GCC_CAMSS_AXI_CLK] = &gcc_camss_axi_clk.clkr,
[GCC_CAMSS_AXI_CLK_SRC] = &gcc_camss_axi_clk_src.clkr,
[GCC_CAMSS_CAMNOC_ATB_CLK] = &gcc_camss_camnoc_atb_clk.clkr,
@@ -3321,20 +3211,16 @@ static struct clk_regmap *gcc_sm6115_clocks[] = {
[GCC_CAMSS_TOP_AHB_CLK] = &gcc_camss_top_ahb_clk.clkr,
[GCC_CAMSS_TOP_AHB_CLK_SRC] = &gcc_camss_top_ahb_clk_src.clkr,
[GCC_CFG_NOC_USB3_PRIM_AXI_CLK] = &gcc_cfg_noc_usb3_prim_axi_clk.clkr,
- [GCC_CPUSS_GNOC_CLK] = &gcc_cpuss_gnoc_clk.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,
[GCC_DISP_THROTTLE_CORE_CLK] = &gcc_disp_throttle_core_clk.clkr,
- [GCC_DISP_XO_CLK] = &gcc_disp_xo_clk.clkr,
[GCC_GP1_CLK] = &gcc_gp1_clk.clkr,
[GCC_GP1_CLK_SRC] = &gcc_gp1_clk_src.clkr,
[GCC_GP2_CLK] = &gcc_gp2_clk.clkr,
[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_IREF_CLK] = &gcc_gpu_iref_clk.clkr,
@@ -3375,7 +3261,6 @@ static struct clk_regmap *gcc_sm6115_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_CLKREF_CLK] = &gcc_ufs_clkref_clk.clkr,
@@ -3512,6 +3397,24 @@ static int gcc_sm6115_probe(struct platform_device *pdev)
clk_alpha_pll_configure(&gpll10, regmap, &gpll10_config);
clk_alpha_pll_configure(&gpll11, regmap, &gpll11_config);
+ /*
+ * Keep the following clocks always on:
+ * GCC_CAMERA_AHB_CLK
+ * GCC_CAMERA_XO_CLK
+ * GCC_CPUSS_GNOC_CLK
+ * GCC_DISP_AHB_CLK
+ * GCC_DISP_XO_CLK
+ * GCC_GPU_CFG_AHB_CLK
+ * GCC_SYS_NOC_CPUSS_AHB_CLK
+ */
+ qcom_branch_set_clk_en(regmap, 0x17008);
+ qcom_branch_set_clk_en(regmap, 0x17028);
+ qcom_branch_set_clk_en(regmap, 0x2b004);
+ qcom_branch_set_clk_en(regmap, 0x1700c);
+ qcom_branch_set_clk_en(regmap, 0x1702c);
+ qcom_branch_set_clk_en(regmap, 0x36004);
+ qcom_branch_set_clk_en(regmap, 0x2b06c);
+
return qcom_cc_really_probe(pdev, &gcc_sm6115_desc, regmap);
}
--
2.41.0
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