From e6f4b4b77981feb3af06e16da073e788fe16de2a Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Fri, 7 Mar 2025 00:26:20 +0000 Subject: [PATCH] clk: sunxi-ng: a523: Add support for bus clocks 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 Reviewed-by: Jernej Skrabec Link: https://patch.msgid.link/20250307002628.10684-7-andre.przywara@arm.com Signed-off-by: Chen-Yu Tsai --- drivers/clk/sunxi-ng/ccu-sun55i-a523.c | 39 ++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/drivers/clk/sunxi-ng/ccu-sun55i-a523.c b/drivers/clk/sunxi-ng/ccu-sun55i-a523.c index 455bca0c344b..c8a96b642bb1 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, }, };