linux-kernel - [PATCH v1] clk: samsung: exynosautov920: add block hsi2 clock support

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Message-Id: <20250509131210.3192208-1-raghav.s@samsung.com>
Date: Fri,  9 May 2025 18:42:10 +0530
From: Raghav Sharma <raghav.s@...sung.com>
To: krzk@...nel.org, s.nawrocki@...sung.com, cw00.choi@...sung.com,
	mturquette@...libre.com, sboyd@...nel.org, richardcochran@...il.com,
	alim.akhtar@...sung.com
Cc: linux-samsung-soc@...r.kernel.org, linux-clk@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, Raghav Sharma <raghav.s@...sung.com>
Subject: [PATCH v1] clk: samsung: exynosautov920: add block hsi2 clock
 support

Register compatible and cmu_info data to support clocks.
CMU_HSI2, this provides clocks for HSI2 block

Signed-off-by: Raghav Sharma <raghav.s@...sung.com>
---
 drivers/clk/samsung/clk-exynosautov920.c | 72 ++++++++++++++++++++++++
 1 file changed, 72 insertions(+)

diff --git a/drivers/clk/samsung/clk-exynosautov920.c b/drivers/clk/samsung/clk-exynosautov920.c
index f8168eed4a66..89d6ea10515d 100644
--- a/drivers/clk/samsung/clk-exynosautov920.c
+++ b/drivers/clk/samsung/clk-exynosautov920.c
@@ -26,6 +26,7 @@
 #define CLKS_NR_MISC			(CLK_DOUT_MISC_OSC_DIV2 + 1)
 #define CLKS_NR_HSI0			(CLK_DOUT_HSI0_PCIE_APB + 1)
 #define CLKS_NR_HSI1			(CLK_MOUT_HSI1_USBDRD + 1)
+#define CLKS_NR_HSI2			(CLK_DOUT_HSI2_ETHERNET_PTP + 1)
 
 /* ---- CMU_TOP ------------------------------------------------------------ */
 
@@ -1752,6 +1753,74 @@ static const struct samsung_cmu_info hsi1_cmu_info __initconst = {
 	.clk_name		= "noc",
 };
 
+/* ---- CMU_HSI2 --------------------------------------------------------- */
+
+/* Register Offset definitions for CMU_HSI2 (0x16b00000) */
+#define PLL_LOCKTIME_PLL_ETH                    0x0
+#define PLL_CON3_PLL_ETH			0x10c
+#define PLL_CON0_MUX_CLKCMU_HSI2_ETHERNET_USER  0x600
+#define PLL_CON0_MUX_CLKCMU_HSI2_NOC_UFS_USER   0x610
+#define PLL_CON0_MUX_CLKCMU_HSI2_UFS_EMBD_USER  0x630
+#define CLK_CON_MUX_MUX_CLK_HSI2_ETHERNET       0x1000
+#define CLK_CON_DIV_DIV_CLK_HSI2_ETHERNET       0x1800
+#define CLK_CON_DIV_DIV_CLK_HSI2_ETHERNET_PTP   0x1804
+
+static const unsigned long hsi2_clk_regs[] __initconst = {
+	PLL_LOCKTIME_PLL_ETH,
+	PLL_CON3_PLL_ETH,
+	PLL_CON0_MUX_CLKCMU_HSI2_ETHERNET_USER,
+	PLL_CON0_MUX_CLKCMU_HSI2_NOC_UFS_USER,
+	PLL_CON0_MUX_CLKCMU_HSI2_UFS_EMBD_USER,
+	CLK_CON_MUX_MUX_CLK_HSI2_ETHERNET,
+	CLK_CON_DIV_DIV_CLK_HSI2_ETHERNET,
+	CLK_CON_DIV_DIV_CLK_HSI2_ETHERNET_PTP,
+};
+
+static const struct samsung_pll_clock hsi2_pll_clks[] __initconst = {
+	/* CMU_HSI2_PLL */
+	PLL(pll_531x, FOUT_PLL_ETH, "fout_pll_eth", "oscclk",
+	    PLL_LOCKTIME_PLL_ETH, PLL_CON3_PLL_ETH, NULL),
+};
+
+/* List of parent clocks for Muxes in CMU_HSI2 */
+PNAME(mout_clkcmu_hsi2_noc_ufs_user_p) = { "oscclk", "dout_clkcmu_hsi2_noc_ufs" };
+PNAME(mout_clkcmu_hsi2_ufs_embd_user_p) = { "oscclk", "dout_clkcmu_hsi2_ufs_embd" };
+PNAME(mout_hsi2_ethernet_p) = { "fout_pll_eth", "mout_clkcmu_hsi2_ethernet_user" };
+PNAME(mout_clkcmu_hsi2_ethernet_user_p) = { "oscclk", "dout_clkcmu_hsi2_ethernet" };
+
+static const struct samsung_mux_clock hsi2_mux_clks[] __initconst = {
+	MUX(CLK_MOUT_HSI2_NOC_UFS_USER, "mout_clkcmu_hsi2_noc_ufs_user",
+	    mout_clkcmu_hsi2_noc_ufs_user_p, PLL_CON0_MUX_CLKCMU_HSI2_NOC_UFS_USER, 4, 1),
+	MUX(CLK_MOUT_HSI2_UFS_EMBD_USER, "mout_clkcmu_hsi2_ufs_embd_user",
+	    mout_clkcmu_hsi2_ufs_embd_user_p, PLL_CON0_MUX_CLKCMU_HSI2_UFS_EMBD_USER, 4, 1),
+	MUX(CLK_MOUT_HSI2_ETHERNET, "mout_hsi2_ethernet",
+	    mout_hsi2_ethernet_p, CLK_CON_MUX_MUX_CLK_HSI2_ETHERNET, 0, 1),
+	MUX(CLK_MOUT_HSI2_ETHERNET_USER, "mout_clkcmu_hsi2_ethernet_user",
+	    mout_clkcmu_hsi2_ethernet_user_p, PLL_CON0_MUX_CLKCMU_HSI2_ETHERNET_USER, 4, 1),
+};
+
+static const struct samsung_div_clock hsi2_div_clks[] __initconst = {
+	DIV(CLK_DOUT_HSI2_ETHERNET, "dout_hsi2_ethernet",
+	    "mout_hsi2_ethernet", CLK_CON_DIV_DIV_CLK_HSI2_ETHERNET,
+	    0, 4),
+	DIV(CLK_DOUT_HSI2_ETHERNET_PTP, "dout_hsi2_ethernet_ptp",
+	    "mout_hsi2_ethernet", CLK_CON_DIV_DIV_CLK_HSI2_ETHERNET_PTP,
+	    0, 4),
+};
+
+static const struct samsung_cmu_info hsi2_cmu_info __initconst = {
+	.pll_clks               = hsi2_pll_clks,
+	.nr_pll_clks            = ARRAY_SIZE(hsi2_pll_clks),
+	.mux_clks               = hsi2_mux_clks,
+	.nr_mux_clks            = ARRAY_SIZE(hsi2_mux_clks),
+	.div_clks               = hsi2_div_clks,
+	.nr_div_clks            = ARRAY_SIZE(hsi2_div_clks),
+	.nr_clk_ids             = CLKS_NR_HSI2,
+	.clk_regs               = hsi2_clk_regs,
+	.nr_clk_regs            = ARRAY_SIZE(hsi2_clk_regs),
+	.clk_name               = "noc",
+};
+
 static int __init exynosautov920_cmu_probe(struct platform_device *pdev)
 {
 	const struct samsung_cmu_info *info;
@@ -1779,6 +1848,9 @@ static const struct of_device_id exynosautov920_cmu_of_match[] = {
 	}, {
 		.compatible = "samsung,exynosautov920-cmu-hsi1",
 		.data = &hsi1_cmu_info,
+	}, {
+		.compatible = "samsung,exynosautov920-cmu-hsi2",
+		.data = &hsi2_cmu_info,
 	},
 	{ }
 };
-- 
2.34.1