linux-kernel - [PATCH v3 10/11] clk: qcom: dispcc-sm8550: enable support for SAR2130P

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Message-Id: <20241025-sar2130p-clocks-v3-10-48f1842fd156@linaro.org>
Date: Fri, 25 Oct 2024 18:03:44 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Taniya Das <quic_tdas@...cinc.com>, 
 Neil Armstrong <neil.armstrong@...aro.org>, 
 Philipp Zabel <p.zabel@...gutronix.de>, 
 Konrad Dybcio <konradybcio@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 10/11] clk: qcom: dispcc-sm8550: enable support for
 SAR2130P

The display clock controller on SAR2130P is very close to the clock
controller on SM8550 (and SM8650). Reuse existing driver to add support
for the controller on SAR2130P.

Reviewed-by: Neil Armstrong <neil.armstrong@...aro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
 drivers/clk/qcom/Kconfig         |  4 ++--
 drivers/clk/qcom/dispcc-sm8550.c | 18 ++++++++++++++++--
 2 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index 0cb5d5a052744761c95a5c72047cd322ddb8e0fc..77a4139d222ec7dea87d63b24896324973e4838b 100644
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -988,10 +988,10 @@ config SM_DISPCC_8450
 config SM_DISPCC_8550
 	tristate "SM8550 Display Clock Controller"
 	depends on ARM64 || COMPILE_TEST
-	depends on SM_GCC_8550 || SM_GCC_8650
+	depends on SM_GCC_8550 || SM_GCC_8650 || SAR_GCC_2130P
 	help
 	  Support for the display clock controller on Qualcomm Technologies, Inc
-	  SM8550 or SM8650 devices.
+	  SAR2130P, SM8550 or SM8650 devices.
 	  Say Y if you want to support display devices and functionality such as
 	  splash screen.
 
diff --git a/drivers/clk/qcom/dispcc-sm8550.c b/drivers/clk/qcom/dispcc-sm8550.c
index 7f9021ca0ecb0ef743a40bed1bb3d2cbcfa23dc7..e41d4104d77021cae6438886bcb7015469d86a9f 100644
--- a/drivers/clk/qcom/dispcc-sm8550.c
+++ b/drivers/clk/qcom/dispcc-sm8550.c
@@ -75,7 +75,7 @@ static struct pll_vco lucid_ole_vco[] = {
 	{ 249600000, 2000000000, 0 },
 };
 
-static const struct alpha_pll_config disp_cc_pll0_config = {
+static struct alpha_pll_config disp_cc_pll0_config = {
 	.l = 0xd,
 	.alpha = 0x6492,
 	.config_ctl_val = 0x20485699,
@@ -106,7 +106,7 @@ static struct clk_alpha_pll disp_cc_pll0 = {
 	},
 };
 
-static const struct alpha_pll_config disp_cc_pll1_config = {
+static struct alpha_pll_config disp_cc_pll1_config = {
 	.l = 0x1f,
 	.alpha = 0x4000,
 	.config_ctl_val = 0x20485699,
@@ -594,6 +594,13 @@ static const struct freq_tbl ftbl_disp_cc_mdss_mdp_clk_src[] = {
 	{ }
 };
 
+static const struct freq_tbl ftbl_disp_cc_mdss_mdp_clk_src_sar2130p[] = {
+	F(200000000, P_DISP_CC_PLL0_OUT_MAIN, 3, 0, 0),
+	F(325000000, P_DISP_CC_PLL0_OUT_MAIN, 3, 0, 0),
+	F(514000000, P_DISP_CC_PLL0_OUT_MAIN, 3, 0, 0),
+	{ }
+};
+
 static const struct freq_tbl ftbl_disp_cc_mdss_mdp_clk_src_sm8650[] = {
 	F(19200000, P_BI_TCXO, 1, 0, 0),
 	F(85714286, P_DISP_CC_PLL0_OUT_MAIN, 3, 0, 0),
@@ -1750,6 +1757,7 @@ static struct qcom_cc_desc disp_cc_sm8550_desc = {
 };
 
 static const struct of_device_id disp_cc_sm8550_match_table[] = {
+	{ .compatible = "qcom,sar2130p-dispcc" },
 	{ .compatible = "qcom,sm8550-dispcc" },
 	{ .compatible = "qcom,sm8650-dispcc" },
 	{ }
@@ -1780,6 +1788,12 @@ static int disp_cc_sm8550_probe(struct platform_device *pdev)
 		disp_cc_mdss_mdp_clk_src.freq_tbl = ftbl_disp_cc_mdss_mdp_clk_src_sm8650;
 		disp_cc_mdss_dptx1_usb_router_link_intf_clk.clkr.hw.init->parent_hws[0] =
 			&disp_cc_mdss_dptx1_link_div_clk_src.clkr.hw;
+	} else if (of_device_is_compatible(pdev->dev.of_node, "qcom,sar2130p-dispcc")) {
+		disp_cc_pll0_config.l = 0x1f;
+		disp_cc_pll0_config.alpha = 0x4000;
+		disp_cc_pll0_config.user_ctl_val = 0x1;
+		disp_cc_pll1_config.user_ctl_val = 0x1;
+		disp_cc_mdss_mdp_clk_src.freq_tbl = ftbl_disp_cc_mdss_mdp_clk_src_sar2130p;
 	}
 
 	clk_lucid_ole_pll_configure(&disp_cc_pll0, regmap, &disp_cc_pll0_config);

-- 
2.39.5