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From:   Taniya Das <tdas@codeaurora.org>
To:     Stephen Boyd <sboyd@kernel.org>,
        =?UTF-8?q?Michael=20Turquette=20=C2=A0?= <mturquette@baylibre.com>
Cc:     Rajendra Nayak <rnayak@codeaurora.org>,
        linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org,
        linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org,
        Taniya Das <tdas@codeaurora.org>
Subject: [PATCH V1] clk: qcom: gcc-sc7180: Mark the MM XO clocks to be always ON
Date:   Wed, 20 Jan 2021 13:17:51 +0530
Message-Id: <1611128871-5898-1-git-send-email-tdas@codeaurora.org>
Precedence: bulk

There are intermittent GDSC power-up failures observed for titan top
gdsc, which requires the XO clock. Thus mark all the MM XO clocks always
enabled from probe.

Fixes: 8d4025943e13 ("clk: qcom: camcc-sc7180: Use runtime PM ops instead of clk ones")
Signed-off-by: Taniya Das <tdas@codeaurora.org>
---
 drivers/clk/qcom/gcc-sc7180.c | 47 ++++---------------------------------------
 1 file changed, 4 insertions(+), 43 deletions(-)

diff --git a/drivers/clk/qcom/gcc-sc7180.c b/drivers/clk/qcom/gcc-sc7180.c
index b05901b..88e896a 100644
--- a/drivers/clk/qcom/gcc-sc7180.c
+++ b/drivers/clk/qcom/gcc-sc7180.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2019-2021, The Linux Foundation. All rights reserved.
  */

 #include <linux/clk-provider.h>
@@ -919,19 +919,6 @@ static struct clk_branch gcc_camera_throttle_hf_axi_clk = {
 	},
 };

-static struct clk_branch gcc_camera_xo_clk = {
-	.halt_reg = 0xb02c,
-	.halt_check = BRANCH_HALT,
-	.clkr = {
-		.enable_reg = 0xb02c,
-		.enable_mask = BIT(0),
-		.hw.init = &(struct clk_init_data){
-			.name = "gcc_camera_xo_clk",
-			.ops = &clk_branch2_ops,
-		},
-	},
-};
-
 static struct clk_branch gcc_ce1_ahb_clk = {
 	.halt_reg = 0x4100c,
 	.halt_check = BRANCH_HALT_VOTED,
@@ -1096,19 +1083,6 @@ static struct clk_branch gcc_disp_throttle_hf_axi_clk = {
 	},
 };

-static struct clk_branch gcc_disp_xo_clk = {
-	.halt_reg = 0xb030,
-	.halt_check = BRANCH_HALT,
-	.clkr = {
-		.enable_reg = 0xb030,
-		.enable_mask = BIT(0),
-		.hw.init = &(struct clk_init_data){
-			.name = "gcc_disp_xo_clk",
-			.ops = &clk_branch2_ops,
-		},
-	},
-};
-
 static struct clk_branch gcc_gp1_clk = {
 	.halt_reg = 0x64000,
 	.halt_check = BRANCH_HALT,
@@ -2159,19 +2133,6 @@ static struct clk_branch gcc_video_throttle_axi_clk = {
 	},
 };

-static struct clk_branch gcc_video_xo_clk = {
-	.halt_reg = 0xb028,
-	.halt_check = BRANCH_HALT,
-	.clkr = {
-		.enable_reg = 0xb028,
-		.enable_mask = BIT(0),
-		.hw.init = &(struct clk_init_data){
-			.name = "gcc_video_xo_clk",
-			.ops = &clk_branch2_ops,
-		},
-	},
-};
-
 static struct clk_branch gcc_mss_cfg_ahb_clk = {
 	.halt_reg = 0x8a000,
 	.halt_check = BRANCH_HALT,
@@ -2304,7 +2265,6 @@ static struct clk_regmap *gcc_sc7180_clocks[] = {
 	[GCC_BOOT_ROM_AHB_CLK] = &gcc_boot_rom_ahb_clk.clkr,
 	[GCC_CAMERA_HF_AXI_CLK] = &gcc_camera_hf_axi_clk.clkr,
 	[GCC_CAMERA_THROTTLE_HF_AXI_CLK] = &gcc_camera_throttle_hf_axi_clk.clkr,
-	[GCC_CAMERA_XO_CLK] = &gcc_camera_xo_clk.clkr,
 	[GCC_CE1_AHB_CLK] = &gcc_ce1_ahb_clk.clkr,
 	[GCC_CE1_AXI_CLK] = &gcc_ce1_axi_clk.clkr,
 	[GCC_CE1_CLK] = &gcc_ce1_clk.clkr,
@@ -2317,7 +2277,6 @@ static struct clk_regmap *gcc_sc7180_clocks[] = {
 	[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_HF_AXI_CLK] = &gcc_disp_throttle_hf_axi_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,
@@ -2413,7 +2372,6 @@ static struct clk_regmap *gcc_sc7180_clocks[] = {
 	[GCC_VIDEO_AXI_CLK] = &gcc_video_axi_clk.clkr,
 	[GCC_VIDEO_GPLL0_DIV_CLK_SRC] = &gcc_video_gpll0_div_clk_src.clkr,
 	[GCC_VIDEO_THROTTLE_AXI_CLK] = &gcc_video_throttle_axi_clk.clkr,
-	[GCC_VIDEO_XO_CLK] = &gcc_video_xo_clk.clkr,
 	[GPLL0] = &gpll0.clkr,
 	[GPLL0_OUT_EVEN] = &gpll0_out_even.clkr,
 	[GPLL6] = &gpll6.clkr,
@@ -2510,6 +2468,9 @@ static int gcc_sc7180_probe(struct platform_device *pdev)
 	regmap_update_bits(regmap, 0x0b004, BIT(0), BIT(0));
 	regmap_update_bits(regmap, 0x0b008, BIT(0), BIT(0));
 	regmap_update_bits(regmap, 0x0b00c, BIT(0), BIT(0));
+	regmap_update_bits(regmap, 0x0b02c, BIT(0), BIT(0));
+	regmap_update_bits(regmap, 0x0b028, BIT(0), BIT(0));
+	regmap_update_bits(regmap, 0x0b030, BIT(0), BIT(0));
 	regmap_update_bits(regmap, 0x71004, BIT(0), BIT(0));

 	ret = qcom_cc_register_rcg_dfs(regmap, gcc_dfs_clocks,
--
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