linux-kernel - [PATCH v2 1/6] clk: qcom: clk-alpha-pll: add support for APSS PLL

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Date:   Tue,  3 May 2022 21:56:00 +0200
From:   Robert Marko <robimarko@...il.com>
To:     agross@...nel.org, bjorn.andersson@...aro.org,
        jassisinghbrar@...il.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, mturquette@...libre.com,
        sboyd@...nel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-clk@...r.kernel.org, dmitry.baryshkov@...aro.org
Cc:     Robert Marko <robimarko@...il.com>
Subject: [PATCH v2 1/6] clk: qcom: clk-alpha-pll: add support for APSS PLL

APSS PLL type will be used by the IPQ8074 APSS driver for providing the
CPU core clocks and enabling CPU Frequency scaling.

This is ported from the downstream 5.4 kernel.

Signed-off-by: Robert Marko <robimarko@...il.com>
---
 drivers/clk/qcom/clk-alpha-pll.c | 12 ++++++++++++
 drivers/clk/qcom/clk-alpha-pll.h |  1 +
 2 files changed, 13 insertions(+)

diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c
index 4406cf609aae..8270363ff98e 100644
--- a/drivers/clk/qcom/clk-alpha-pll.c
+++ b/drivers/clk/qcom/clk-alpha-pll.c
@@ -154,6 +154,18 @@ const u8 clk_alpha_pll_regs[][PLL_OFF_MAX_REGS] = {
 		[PLL_OFF_TEST_CTL_U] = 0x30,
 		[PLL_OFF_TEST_CTL_U1] = 0x34,
 	},
+	[CLK_ALPHA_PLL_TYPE_APSS] = {
+		[PLL_OFF_L_VAL] = 0x08,
+		[PLL_OFF_ALPHA_VAL] = 0x10,
+		[PLL_OFF_ALPHA_VAL_U] = 0xff,
+		[PLL_OFF_USER_CTL] = 0x18,
+		[PLL_OFF_USER_CTL_U] = 0xff,
+		[PLL_OFF_CONFIG_CTL] = 0x20,
+		[PLL_OFF_CONFIG_CTL_U] = 0x24,
+		[PLL_OFF_TEST_CTL] = 0x30,
+		[PLL_OFF_TEST_CTL_U] = 0x34,
+		[PLL_OFF_STATUS] = 0x28,
+	},
 };
 EXPORT_SYMBOL_GPL(clk_alpha_pll_regs);
 
diff --git a/drivers/clk/qcom/clk-alpha-pll.h b/drivers/clk/qcom/clk-alpha-pll.h
index 6e9907deaf30..626fdf80336d 100644
--- a/drivers/clk/qcom/clk-alpha-pll.h
+++ b/drivers/clk/qcom/clk-alpha-pll.h
@@ -18,6 +18,7 @@ enum {
 	CLK_ALPHA_PLL_TYPE_AGERA,
 	CLK_ALPHA_PLL_TYPE_ZONDA,
 	CLK_ALPHA_PLL_TYPE_LUCID_EVO,
+	CLK_ALPHA_PLL_TYPE_APSS,
 	CLK_ALPHA_PLL_TYPE_MAX,
 };
 
-- 
2.35.1