diff mbox series

[v2,06/15] clk: sunxi-ng: a523: Add support for bus clocks

Message ID 20250214125359.5204-7-andre.przywara@arm.com (mailing list archive)
State Under Review
Headers show
Series clk: sunxi-ng: add A523 clock support | expand

Commit Message

Andre Przywara Feb. 14, 2025, 12:53 p.m. UTC 
Add the basic bus clocks for the Allwinner A523 and T527 SoCs.
This covers the AHB, APB0 and APB1 clocks. Linux is not supposed to
change those clocks, but they are needed as parents for many other mod
clocks.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
---
 drivers/clk/sunxi-ng/ccu-sun55i-a523.c | 39 ++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

Comments

Jernej Škrabec Feb. 18, 2025, 7:06 p.m. UTC | #1 
Dne petek, 14. februar 2025 ob 13:53:50 Srednjeevropski standardni čas je Andre Przywara napisal(a):
> Add the basic bus clocks for the Allwinner A523 and T527 SoCs.
> This covers the AHB, APB0 and APB1 clocks. Linux is not supposed to
> change those clocks, but they are needed as parents for many other mod
> clocks.
> 
> Signed-off-by: Andre Przywara <andre.przywara@arm.com>

Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>

Best regards,
Jernej
diff mbox series

Patch

diff --git a/drivers/clk/sunxi-ng/ccu-sun55i-a523.c b/drivers/clk/sunxi-ng/ccu-sun55i-a523.c
index 8374e841e9d82..59f45e7c0904b 100644
--- a/drivers/clk/sunxi-ng/ccu-sun55i-a523.c
+++ b/drivers/clk/sunxi-ng/ccu-sun55i-a523.c
@@ -331,6 +331,39 @@  static CLK_FIXED_FACTOR_HW(pll_npu_2x_clk, "pll-npu-2x",
 static CLK_FIXED_FACTOR_HW(pll_npu_1x_clk, "pll-npu-1x",
 			   &pll_npu_4x_clk.common.hw, 4, 1, 0);
 
+
+/**************************************************************************
+ *                           bus clocks                                   *
+ **************************************************************************/
+
+static const struct clk_parent_data ahb_apb0_parents[] = {
+	{ .fw_name = "hosc" },
+	{ .fw_name = "losc" },
+	{ .fw_name = "iosc" },
+	{ .hw = &pll_periph0_600M_clk.hw },
+};
+
+static SUNXI_CCU_M_DATA_WITH_MUX(ahb_clk, "ahb", ahb_apb0_parents, 0x510,
+				 0, 5,		/* M */
+				 24, 2,		/* mux */
+				 0);
+static SUNXI_CCU_M_DATA_WITH_MUX(apb0_clk, "apb0", ahb_apb0_parents, 0x520,
+				 0, 5,		/* M */
+				 24, 2,	/* mux */
+				 0);
+
+static const struct clk_parent_data apb1_parents[] = {
+	{ .fw_name = "hosc" },
+	{ .fw_name = "losc" },
+	{ .fw_name = "iosc" },
+	{ .hw = &pll_periph0_600M_clk.hw },
+	{ .hw = &pll_periph0_480M_clk.common.hw },
+};
+static SUNXI_CCU_M_DATA_WITH_MUX(apb1_clk, "apb1", apb1_parents, 0x524,
+				 0, 5,		/* M */
+				 24, 3,		/* mux */
+				 0);
+
 /*
  * Contains all clocks that are controlled by a hardware register. They
  * have a (sunxi) .common member, which needs to be initialised by the common
@@ -358,6 +391,9 @@  static struct ccu_common *sun55i_a523_ccu_clks[] = {
 	&pll_ve_clk.common,
 	&pll_audio0_4x_clk.common,
 	&pll_npu_4x_clk.common,
+	&ahb_clk.common,
+	&apb0_clk.common,
+	&apb1_clk.common,
 };
 
 static struct clk_hw_onecell_data sun55i_a523_hw_clks = {
@@ -403,6 +439,9 @@  static struct clk_hw_onecell_data sun55i_a523_hw_clks = {
 		[CLK_PLL_NPU_4X]	= &pll_npu_4x_clk.common.hw,
 		[CLK_PLL_NPU_2X]	= &pll_npu_2x_clk.hw,
 		[CLK_PLL_NPU]		= &pll_npu_1x_clk.hw,
+		[CLK_AHB]		= &ahb_clk.common.hw,
+		[CLK_APB0]		= &apb0_clk.common.hw,
+		[CLK_APB1]		= &apb1_clk.common.hw,
 	},
 };