[PATCH v5 3/8] clk: starfive: Add peripheral-0 domain PLL clock driver

[Changhuang Liang]

Add peripheral-0 domain PLL clock driver support for StarFive JHB100
SoC.

Signed-off-by: Changhuang Liang <changhuang.liang@xxxxxxxxxxxxxxxx>
Reviewed-by: Xingyu Wu <xingyu.wu@xxxxxxxxxxxxxxxx>
---
 .../clk/starfive/clk-starfive-jhb100-pll.c    | 60 +++++++++++++++----
 1 file changed, 50 insertions(+), 10 deletions(-)

diff --git a/drivers/clk/starfive/clk-starfive-jhb100-pll.c b/drivers/clk/starfive/clk-starfive-jhb100-pll.c
index e23365164497..f6ebaaf5aa18 100644
--- a/drivers/clk/starfive/clk-starfive-jhb100-pll.c
+++ b/drivers/clk/starfive/clk-starfive-jhb100-pll.c
@@ -30,6 +30,9 @@
 #define JHB100_PLL4_OFFSET		0x18
 #define JHB100_PLL5_OFFSET		0x24
 
+/* Peripheral-0 domain PLL */
+#define JHB100_PLL6_OFFSET		0x00
+
 #define JHB100_PLL_CFG0_OFFSET		0x0
 #define JHB100_PLL_CFG1_OFFSET		0x4
 #define JHB100_PLL_CFG2_OFFSET		0x8
@@ -417,16 +420,21 @@ static int jhb100_pll_probe(struct platform_device *pdev)
 	unsigned int idx;
 	int ret;
 
-	id = platform_get_device_id(pdev);
-	if (!id)
-		return dev_err_probe(dev, -EINVAL, "no match data\n");
-
-	/*
-	 * Instantiated as an MFD cell of the sys0 system controller,
-	 * which owns the DT node describing the PLL registers.
-	 */
-	match_data = (const struct jhb100_pll_match_data *)id->driver_data;
-	np = dev_of_node(dev->parent);
+	match_data = device_get_match_data(dev);
+	if (match_data) {
+		np = dev_of_node(dev);
+	} else {
+		id = platform_get_device_id(pdev);
+		if (!id)
+			return dev_err_probe(dev, -EINVAL, "no match data\n");
+
+		/*
+		 * Instantiated as an MFD cell of the sys0 system controller,
+		 * which owns the DT node describing the PLL registers.
+		 */
+		match_data = (const struct jhb100_pll_match_data *)id->driver_data;
+		np = dev_of_node(dev->parent);
+	}
 
 	priv = devm_kzalloc(&pdev->dev, struct_size(priv, pll, match_data->num_pll),
 			    GFP_KERNEL);
@@ -504,6 +512,28 @@ static const struct jhb100_pll_match_data jhb100_sys0_pll = {
 	.num_pll = ARRAY_SIZE(jhb100_sys0_pll_info),
 };
 
+static const struct jhb100_pll_preset jhb100_pll6_presets[] = {
+	{
+		.freq = 2400000000,
+		.fbdiv = 192,
+		.frac = 0,
+		.refdiv = 1,
+		.postdiv = 0,
+		.foutpostdiv_en = 1,
+		.foutvcop_en = 0,
+	},
+};
+
+static const struct jhb100_pll_info jhb100_per0_pll_info[] = {
+	JHB100_PLL(JHB100_PER0PLL_PLL6_OUT, "pll6_out", jhb100_pll6_presets,
+		   ARRAY_SIZE(jhb100_pll6_presets), JHB100_PLL6_OFFSET, false),
+};
+
+static const struct jhb100_pll_match_data jhb100_per0_pll = {
+	.pll_info = jhb100_per0_pll_info,
+	.num_pll = ARRAY_SIZE(jhb100_per0_pll_info),
+};
+
 static const struct platform_device_id jhb100_pll_ids[] = {
 	{
 		.name = "jhb100-sys0-pll",
@@ -513,11 +543,21 @@ static const struct platform_device_id jhb100_pll_ids[] = {
 };
 MODULE_DEVICE_TABLE(platform, jhb100_pll_ids);
 
+static const struct of_device_id jhb100_pll_match[] = {
+	{
+		.compatible = "starfive,jhb100-per0-syscon",
+		.data = &jhb100_per0_pll,
+	},
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, jhb100_pll_match);
+
 static struct platform_driver jhb100_pll_driver = {
 	.probe = jhb100_pll_probe,
 	.id_table = jhb100_pll_ids,
 	.driver = {
 		.name = "clk-starfive-jhb100-pll",
+		.of_match_table = jhb100_pll_match,
 		.suppress_bind_attrs = true,
 	},
 };
-- 
2.25.1