[PATCH v2 2/2] clk: ast2600: Add RMII RCLK gates for all four MACs
From: Andrew Jeffery <hidden>
Date: 2019-10-10 02:10:01
Also in:
linux-arm-kernel, linux-aspeed, linux-clk, lkml
Subsystem:
common clk framework, the rest · Maintainers:
Michael Turquette, Stephen Boyd, Linus Torvalds
RCLK is a fixed 50MHz clock derived from HPLL/HCLK that is described by a single gate for each MAC. Signed-off-by: Andrew Jeffery <redacted> --- drivers/clk/clk-ast2600.c | 47 ++++++++++++++++++++++++++++++++++++++- 1 file changed, 46 insertions(+), 1 deletion(-)
diff --git a/drivers/clk/clk-ast2600.c b/drivers/clk/clk-ast2600.c
index 1c1bb39bb04e..85acc7cdc83c 100644
--- a/drivers/clk/clk-ast2600.c
+++ b/drivers/clk/clk-ast2600.c@@ -15,7 +15,7 @@ #include "clk-aspeed.h" -#define ASPEED_G6_NUM_CLKS 67 +#define ASPEED_G6_NUM_CLKS 71 #define ASPEED_G6_SILICON_REV 0x004
@@ -40,6 +40,9 @@ #define ASPEED_G6_STRAP1 0x500 +#define ASPEED_MAC12_CLK_DLY 0x340 +#define ASPEED_MAC34_CLK_DLY 0x350 + /* Globally visible clocks */ static DEFINE_SPINLOCK(aspeed_g6_clk_lock);
@@ -485,6 +488,11 @@ static int aspeed_g6_clk_probe(struct platform_device *pdev) return PTR_ERR(hw); aspeed_g6_clk_data->hws[ASPEED_CLK_SDIO] = hw; + /* MAC1/2 RMII 50MHz RCLK */ + hw = clk_hw_register_fixed_rate(dev, "mac12rclk", "hpll", 0, 50000000); + if (IS_ERR(hw)) + return PTR_ERR(hw); + /* MAC1/2 AHB bus clock divider */ hw = clk_hw_register_divider_table(dev, "mac12", "hpll", 0, scu_g6_base + ASPEED_G6_CLK_SELECTION1, 16, 3, 0,
@@ -494,6 +502,27 @@ static int aspeed_g6_clk_probe(struct platform_device *pdev) return PTR_ERR(hw); aspeed_g6_clk_data->hws[ASPEED_CLK_MAC12] = hw; + /* RMII1 50MHz (RCLK) output enable */ + hw = clk_hw_register_gate(dev, "mac1rclk", "mac12rclk", 0, + scu_g6_base + ASPEED_MAC12_CLK_DLY, 29, 0, + &aspeed_g6_clk_lock); + if (IS_ERR(hw)) + return PTR_ERR(hw); + aspeed_g6_clk_data->hws[ASPEED_CLK_MAC1RCLK] = hw; + + /* RMII2 50MHz (RCLK) output enable */ + hw = clk_hw_register_gate(dev, "mac2rclk", "mac12rclk", 0, + scu_g6_base + ASPEED_MAC12_CLK_DLY, 30, 0, + &aspeed_g6_clk_lock); + if (IS_ERR(hw)) + return PTR_ERR(hw); + aspeed_g6_clk_data->hws[ASPEED_CLK_MAC2RCLK] = hw; + + /* MAC1/2 RMII 50MHz RCLK */ + hw = clk_hw_register_fixed_rate(dev, "mac34rclk", "hclk", 0, 50000000); + if (IS_ERR(hw)) + return PTR_ERR(hw); + /* MAC3/4 AHB bus clock divider */ hw = clk_hw_register_divider_table(dev, "mac34", "hpll", 0, scu_g6_base + 0x310, 24, 3, 0,
@@ -503,6 +532,22 @@ static int aspeed_g6_clk_probe(struct platform_device *pdev) return PTR_ERR(hw); aspeed_g6_clk_data->hws[ASPEED_CLK_MAC34] = hw; + /* RMII3 50MHz (RCLK) output enable */ + hw = clk_hw_register_gate(dev, "mac3rclk", "mac34rclk", 0, + scu_g6_base + ASPEED_MAC34_CLK_DLY, 29, 0, + &aspeed_g6_clk_lock); + if (IS_ERR(hw)) + return PTR_ERR(hw); + aspeed_g6_clk_data->hws[ASPEED_CLK_MAC3RCLK] = hw; + + /* RMII4 50MHz (RCLK) output enable */ + hw = clk_hw_register_gate(dev, "mac4rclk", "mac34rclk", 0, + scu_g6_base + ASPEED_MAC34_CLK_DLY, 30, 0, + &aspeed_g6_clk_lock); + if (IS_ERR(hw)) + return PTR_ERR(hw); + aspeed_g6_clk_data->hws[ASPEED_CLK_MAC4RCLK] = hw; + /* LPC Host (LHCLK) clock divider */ hw = clk_hw_register_divider_table(dev, "lhclk", "hpll", 0, scu_g6_base + ASPEED_G6_CLK_SELECTION1, 20, 3, 0,
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2.20.1