Thread (4 messages) 4 messages, 4 authors, 2018-06-01

[PATCH] clk: aspeed: Add 24MHz fixed clock

From: Joel Stanley <joel@jms.id.au>
Date: 2018-05-21 04:34:02
Also in: linux-arm-kernel, linux-clk, linux-devicetree, lkml

On 18 May 2018 at 18:27, Lei YU [off-list ref] wrote:
Add a 24MHz fixed clock.
This clock will be used for certain devices, e.g. pwm.

Signed-off-by: Lei YU <redacted>
Reviewed-by: Joel Stanley <joel@jms.id.au>

Cheers,

Joel
quoted hunk ↗ jump to hunk
---
 drivers/clk/clk-aspeed.c                 | 9 ++++++++-
 include/dt-bindings/clock/aspeed-clock.h | 1 +
 2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/clk/clk-aspeed.c b/drivers/clk/clk-aspeed.c
index 5eb50c3..4664088 100644
--- a/drivers/clk/clk-aspeed.c
+++ b/drivers/clk/clk-aspeed.c
@@ -14,7 +14,7 @@

 #include <dt-bindings/clock/aspeed-clock.h>

-#define ASPEED_NUM_CLKS                35
+#define ASPEED_NUM_CLKS                36

 #define ASPEED_RESET_CTRL      0x04
 #define ASPEED_CLK_SELECTION   0x08
@@ -474,6 +474,13 @@ static int aspeed_clk_probe(struct platform_device *pdev)
                return PTR_ERR(hw);
        aspeed_clk_data->hws[ASPEED_CLK_BCLK] = hw;

+       /* Fixed 24MHz clock */
+       hw = clk_hw_register_fixed_rate(NULL, "fixed-24m", "clkin",
+                                       0, 24000000);
+       if (IS_ERR(hw))
+               return PTR_ERR(hw);
+       aspeed_clk_data->hws[ASPEED_CLK_24M] = hw;
+
        /*
         * TODO: There are a number of clocks that not included in this driver
         * as more information is required:
diff --git a/include/dt-bindings/clock/aspeed-clock.h b/include/dt-bindings/clock/aspeed-clock.h
index d3558d8..ff29d8e 100644
--- a/include/dt-bindings/clock/aspeed-clock.h
+++ b/include/dt-bindings/clock/aspeed-clock.h
@@ -38,6 +38,7 @@
 #define ASPEED_CLK_MAC                 32
 #define ASPEED_CLK_BCLK                        33
 #define ASPEED_CLK_MPLL                        34
+#define ASPEED_CLK_24M                 35

 #define ASPEED_RESET_XDMA              0
 #define ASPEED_RESET_MCTP              1
--
2.7.4
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