linux-kernel - [PATCH V3 3/5] clk: qcom: apss-ipq-pll: add support for IPQ5332

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Message-ID: <20230217083308.12017-4-quic_kathirav@quicinc.com>
Date:   Fri, 17 Feb 2023 14:03:06 +0530
From:   Kathiravan T <quic_kathirav@...cinc.com>
To:     <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...aro.org>, <mturquette@...libre.com>,
        <sboyd@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <jassisinghbrar@...il.com>,
        <linux-arm-msm@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <quic_varada@...cinc.com>, <quic_srichara@...cinc.com>,
        Kathiravan T <quic_kathirav@...cinc.com>
Subject: [PATCH V3 3/5] clk: qcom: apss-ipq-pll: add support for IPQ5332

IPQ5332 APSS PLL is of type Stromer Plus. Add support for the same.

To configure the stromer plus PLL separate API
(clock_stromer_pll_configure) to be used. To achieve this, introduce the
new member pll_type in device data structure and call the appropriate
function based on this.

Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>
Signed-off-by: Kathiravan T <quic_kathirav@...cinc.com>
---
Changes in V3:
	- Pick up R-b tag

Changes in V2:
	- No changes

 drivers/clk/qcom/apss-ipq-pll.c | 58 ++++++++++++++++++++++++++++++++-
 1 file changed, 57 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/qcom/apss-ipq-pll.c b/drivers/clk/qcom/apss-ipq-pll.c
index 4f2a147e9fb2..cf4f0d340cbf 100644
--- a/drivers/clk/qcom/apss-ipq-pll.c
+++ b/drivers/clk/qcom/apss-ipq-pll.c
@@ -24,6 +24,17 @@ static const u8 ipq_pll_offsets[][PLL_OFF_MAX_REGS] = {
 		[PLL_OFF_TEST_CTL] = 0x30,
 		[PLL_OFF_TEST_CTL_U] = 0x34,
 	},
+	[CLK_ALPHA_PLL_TYPE_STROMER_PLUS] = {
+		[PLL_OFF_L_VAL] = 0x08,
+		[PLL_OFF_ALPHA_VAL] = 0x10,
+		[PLL_OFF_ALPHA_VAL_U] = 0x14,
+		[PLL_OFF_USER_CTL] = 0x18,
+		[PLL_OFF_USER_CTL_U] = 0x1c,
+		[PLL_OFF_CONFIG_CTL] = 0x20,
+		[PLL_OFF_STATUS] = 0x28,
+		[PLL_OFF_TEST_CTL] = 0x30,
+		[PLL_OFF_TEST_CTL_U] = 0x34,
+	},
 };
 
 static struct clk_alpha_pll ipq_pll_huayra = {
@@ -44,6 +55,38 @@ static struct clk_alpha_pll ipq_pll_huayra = {
 	},
 };
 
+static struct clk_alpha_pll ipq_pll_stromer_plus = {
+	.offset = 0x0,
+	.regs = ipq_pll_offsets[CLK_ALPHA_PLL_TYPE_STROMER_PLUS],
+	.flags = SUPPORTS_DYNAMIC_UPDATE,
+	.clkr = {
+		.enable_reg = 0x0,
+		.enable_mask = BIT(0),
+		.hw.init = &(struct clk_init_data){
+			.name = "a53pll",
+			.parent_data = &(const struct clk_parent_data) {
+				.fw_name = "xo",
+			},
+			.num_parents = 1,
+			.ops = &clk_alpha_pll_stromer_ops,
+		},
+	},
+};
+
+static const struct alpha_pll_config ipq5332_pll_config = {
+	.l = 0x3e,
+	.config_ctl_val = 0x4001075b,
+	.config_ctl_hi_val = 0x304,
+	.main_output_mask = BIT(0),
+	.aux_output_mask = BIT(1),
+	.early_output_mask = BIT(3),
+	.alpha_en_mask = BIT(24),
+	.status_val = 0x3,
+	.status_mask = GENMASK(10, 8),
+	.lock_det = BIT(2),
+	.test_ctl_hi_val = 0x00400003,
+};
+
 static const struct alpha_pll_config ipq6018_pll_config = {
 	.l = 0x37,
 	.config_ctl_val = 0x240d4828,
@@ -69,16 +112,25 @@ static const struct alpha_pll_config ipq8074_pll_config = {
 };
 
 struct apss_pll_data {
+	int pll_type;
 	struct clk_alpha_pll *pll;
 	const struct alpha_pll_config *pll_config;
 };
 
+static struct apss_pll_data ipq5332_pll_data = {
+	.pll_type = CLK_ALPHA_PLL_TYPE_STROMER_PLUS,
+	.pll = &ipq_pll_stromer_plus,
+	.pll_config = &ipq5332_pll_config,
+};
+
 static struct apss_pll_data ipq8074_pll_data = {
+	.pll_type = CLK_ALPHA_PLL_TYPE_HUAYRA,
 	.pll = &ipq_pll_huayra,
 	.pll_config = &ipq8074_pll_config,
 };
 
 static struct apss_pll_data ipq6018_pll_data = {
+	.pll_type = CLK_ALPHA_PLL_TYPE_HUAYRA,
 	.pll = &ipq_pll_huayra,
 	.pll_config = &ipq6018_pll_config,
 };
@@ -111,7 +163,10 @@ static int apss_ipq_pll_probe(struct platform_device *pdev)
 	if (!data)
 		return -ENODEV;
 
-	clk_alpha_pll_configure(data->pll, regmap, data->pll_config);
+	if (data->pll_type == CLK_ALPHA_PLL_TYPE_HUAYRA)
+		clk_alpha_pll_configure(data->pll, regmap, data->pll_config);
+	else if (data->pll_type == CLK_ALPHA_PLL_TYPE_STROMER_PLUS)
+		clk_stromer_pll_configure(data->pll, regmap, data->pll_config);
 
 	ret = devm_clk_register_regmap(dev, &data->pll->clkr);
 	if (ret)
@@ -122,6 +177,7 @@ static int apss_ipq_pll_probe(struct platform_device *pdev)
 }
 
 static const struct of_device_id apss_ipq_pll_match_table[] = {
+	{ .compatible = "qcom,ipq5332-a53pll", .data = &ipq5332_pll_data },
 	{ .compatible = "qcom,ipq6018-a53pll", .data = &ipq6018_pll_data },
 	{ .compatible = "qcom,ipq8074-a53pll", .data = &ipq8074_pll_data },
 	{ }
-- 
2.17.1