linux-kernel - [PATCH 1/3] clk: qcom: clk-alpha-pll: Add support for Rivian ELU PLL

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Message-Id: <20251202-sm8750_camcc-v1-1-b3f7ef6723f1@oss.qualcomm.com>
Date: Tue, 02 Dec 2025 15:56:25 +0530
From: Taniya Das <taniya.das@....qualcomm.com>
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>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>,
        Jagadeesh Kona <quic_jkona@...cinc.com>
Cc: Ajit Pandey <ajit.pandey@....qualcomm.com>,
        Imran Shaik <imran.shaik@....qualcomm.com>,
        Jagadeesh Kona <jagadeesh.kona@....qualcomm.com>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org,
        Taniya Das <taniya.das@....qualcomm.com>
Subject: [PATCH 1/3] clk: qcom: clk-alpha-pll: Add support for Rivian ELU
 PLL

Add clock ops for Rivian ELU PLL, add the register offsets for supporting
the PLL.

Signed-off-by: Taniya Das <taniya.das@....qualcomm.com>
---
 drivers/clk/qcom/clk-alpha-pll.c | 14 ++++++++++++++
 drivers/clk/qcom/clk-alpha-pll.h |  2 ++
 2 files changed, 16 insertions(+)

diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c
index 6aeba40358c11e44c5f39d15f149d62149393cd3..8586649d76f8aef119ed51fbf1ca90bc5e3ce510 100644
--- a/drivers/clk/qcom/clk-alpha-pll.c
+++ b/drivers/clk/qcom/clk-alpha-pll.c
@@ -243,6 +243,19 @@ const u8 clk_alpha_pll_regs[][PLL_OFF_MAX_REGS] = {
 		[PLL_OFF_TEST_CTL] = 0x28,
 		[PLL_OFF_TEST_CTL_U] = 0x2c,
 	},
+	[CLK_ALPHA_PLL_TYPE_RIVIAN_ELU] = {
+		[PLL_OFF_OPMODE] = 0x04,
+		[PLL_OFF_STATUS] = 0x0c,
+		[PLL_OFF_L_VAL] = 0x10,
+		[PLL_OFF_USER_CTL] = 0x14,
+		[PLL_OFF_USER_CTL_U] = 0x18,
+		[PLL_OFF_CONFIG_CTL] = 0x1c,
+		[PLL_OFF_CONFIG_CTL_U] = 0x20,
+		[PLL_OFF_CONFIG_CTL_U1] = 0x24,
+		[PLL_OFF_CONFIG_CTL_U2] = 0x28,
+		[PLL_OFF_TEST_CTL] = 0x2c,
+		[PLL_OFF_TEST_CTL_U] = 0x30,
+	},
 	[CLK_ALPHA_PLL_TYPE_DEFAULT_EVO] = {
 		[PLL_OFF_L_VAL] = 0x04,
 		[PLL_OFF_ALPHA_VAL] = 0x08,
@@ -3002,6 +3015,7 @@ void qcom_clk_alpha_pll_configure(struct clk_alpha_pll *pll, struct regmap *regm
 		clk_taycan_elu_pll_configure(pll, regmap, pll->config);
 		break;
 	case CLK_ALPHA_PLL_TYPE_RIVIAN_EVO:
+	case CLK_ALPHA_PLL_TYPE_RIVIAN_ELU:
 		clk_rivian_evo_pll_configure(pll, regmap, pll->config);
 		break;
 	case CLK_ALPHA_PLL_TYPE_TRION:
diff --git a/drivers/clk/qcom/clk-alpha-pll.h b/drivers/clk/qcom/clk-alpha-pll.h
index 0903a05b18ccc68c9f8de5c7405bb197bf8d3d1d..b4492197419a7f326a4f6e6607ccee58ced509db 100644
--- a/drivers/clk/qcom/clk-alpha-pll.h
+++ b/drivers/clk/qcom/clk-alpha-pll.h
@@ -31,6 +31,7 @@ enum {
 	CLK_ALPHA_PLL_TYPE_TAYCAN_ELU,
 	CLK_ALPHA_PLL_TYPE_TAYCAN_EKO_T = CLK_ALPHA_PLL_TYPE_TAYCAN_ELU,
 	CLK_ALPHA_PLL_TYPE_RIVIAN_EVO,
+	CLK_ALPHA_PLL_TYPE_RIVIAN_ELU,
 	CLK_ALPHA_PLL_TYPE_DEFAULT_EVO,
 	CLK_ALPHA_PLL_TYPE_BRAMMO_EVO,
 	CLK_ALPHA_PLL_TYPE_STROMER,
@@ -208,6 +209,7 @@ extern const struct clk_ops clk_alpha_pll_postdiv_lucid_evo_ops;
 extern const struct clk_ops clk_alpha_pll_pongo_elu_ops;
 extern const struct clk_ops clk_alpha_pll_rivian_evo_ops;
 #define clk_alpha_pll_postdiv_rivian_evo_ops clk_alpha_pll_postdiv_fabia_ops
+#define clk_alpha_pll_rivian_elu_ops clk_alpha_pll_rivian_evo_ops
 
 extern const struct clk_ops clk_alpha_pll_regera_ops;
 extern const struct clk_ops clk_alpha_pll_slew_ops;

-- 
2.34.1