linux-kernel - [PATCH v2 03/11] clk: qcom: clk-alpha-pll: Add support for controlling Rivian PLL

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Message-Id: <20251125-kaanapali-mmcc-v2-v2-3-fb44e78f300b@oss.qualcomm.com>
Date: Tue, 25 Nov 2025 23:15:12 +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>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>,
        Konrad Dybcio <konradybcio@...nel.org>
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,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org,
        Taniya Das <taniya.das@....qualcomm.com>,
        Jingyi Wang <jingyi.wang@....qualcomm.com>,
        Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: [PATCH v2 03/11] clk: qcom: clk-alpha-pll: Add support for
 controlling Rivian PLL

Add clock ops for Rivian ELU and EKO_T PLLs, add the register offsets
for the Rivian ELU PLL. Since ELU and EKO_T shared the same offsets and
PLL ops, reuse the Rivian EKO_T enum.

Signed-off-by: Jingyi Wang <jingyi.wang@....qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Signed-off-by: Taniya Das <taniya.das@....qualcomm.com>
---
 drivers/clk/qcom/clk-alpha-pll.c | 14 ++++++++++++++
 drivers/clk/qcom/clk-alpha-pll.h |  4 ++++
 2 files changed, 18 insertions(+)

diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c
index 6f50f0c4b984e991982ee8914a496c00c4ee063b..3fbdee6e67f9c82a2b93f2624a112934f01686d5 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,
@@ -3006,6 +3019,7 @@ 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 fc55a42fac2ffe589ba270010eb47c0816832ca7..da7d3d75592373cb2df472b9976f8c7063dc5021 100644
--- a/drivers/clk/qcom/clk-alpha-pll.h
+++ b/drivers/clk/qcom/clk-alpha-pll.h
@@ -32,6 +32,8 @@ 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_RIVIAN_EKO_T = CLK_ALPHA_PLL_TYPE_RIVIAN_ELU,
 	CLK_ALPHA_PLL_TYPE_DEFAULT_EVO,
 	CLK_ALPHA_PLL_TYPE_BRAMMO_EVO,
 	CLK_ALPHA_PLL_TYPE_STROMER,
@@ -210,6 +212,8 @@ extern const struct clk_ops clk_alpha_pll_postdiv_lucid_evo_ops;
 extern const struct clk_ops clk_alpha_pll_pongo_elu_ops;
 #define clk_alpha_pll_pongo_eko_t_ops clk_alpha_pll_pongo_elu_ops
 extern const struct clk_ops clk_alpha_pll_rivian_evo_ops;
+#define clk_alpha_pll_rivian_elu_ops clk_alpha_pll_rivian_evo_ops
+#define clk_alpha_pll_rivian_eko_t_ops clk_alpha_pll_rivian_evo_ops
 #define clk_alpha_pll_postdiv_rivian_evo_ops clk_alpha_pll_postdiv_fabia_ops
 
 extern const struct clk_ops clk_alpha_pll_regera_ops;

-- 
2.34.1