From: Dinh Nguyen <dinguyen@xxxxxxxxxxxxxxxxxxxxx>
The CIU(Card Interface Unit) get its clock from the sdmmc_clk_divided clock
which is used to clock the card. The sdmmc_clk_divided clock is the sdmmc_clk
passed through a fixed divider of 4. This patch adds the sdmmc_clk_divided
node and makes the sdmmc_clk it's parent.
Signed-off-by: Dinh Nguyen <dinguyen@xxxxxxxxxxxxxxxxxxxxx>
---
v2: renamed ciu_clk to sdmmc_clk_divided
---
arch/arm/boot/dts/socfpga.dtsi | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/socfpga.dtsi b/arch/arm/boot/dts/socfpga.dtsi
index d9176e6..be4beda 100644
--- a/arch/arm/boot/dts/socfpga.dtsi
+++ b/arch/arm/boot/dts/socfpga.dtsi
@@ -451,6 +451,14 @@
clk-phase = <0 135>;
};
+ sdmmc_clk_divided: sdmmc_clk_divided {
+ #clock-cells = <0>;
+ compatible = "altr,socfpga-gate-clk";
+ clocks = <&sdmmc_clk>;
+ clk-gate = <0xa0 8>;
+ fixed-divider = <4>;
+ };
+
nand_x_clk: nand_x_clk {
#clock-cells = <0>;
compatible = "altr,socfpga-gate-clk";
@@ -635,7 +643,7 @@
fifo-depth = <0x400>;
#address-cells = <1>;
#size-cells = <0>;
- clocks = <&l4_mp_clk>, <&sdmmc_clk>;
+ clocks = <&l4_mp_clk>, <&sdmmc_clk_divided>;
clock-names = "biu", "ciu";
};
--
2.2.1
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