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Subject[PATCH] ARC: HSDK: Add core pll node to DT to manage cpu clk
Date
Add core pll node (core_clk) to manage cpu frequency.
core_clk node represents pll itself.
input_clk node represents clock signal source (basically xtal)
which comes to pll input.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
---
arch/arc/boot/dts/hsdk.dts | 11 +++++++++--
arch/arc/configs/hsdk_defconfig | 1 +
2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/arch/arc/boot/dts/hsdk.dts b/arch/arc/boot/dts/hsdk.dts
index 229d13a..8412669 100644
--- a/arch/arc/boot/dts/hsdk.dts
+++ b/arch/arc/boot/dts/hsdk.dts
@@ -57,10 +57,10 @@
};
};

- core_clk: core-clk {
+ input_clk: input-clk {
#clock-cells = <0>;
compatible = "fixed-clock";
- clock-frequency = <500000000>;
+ clock-frequency = <33333333>;
};

cpu_intc: cpu-interrupt-controller {
@@ -102,6 +102,13 @@

ranges = <0x00000000 0xf0000000 0x10000000>;

+ core_clk: core-clk@0 {
+ compatible = "snps,hsdk-core-pll-clock";
+ reg = <0x00 0x10>, <0x14B8 0x4>;
+ #clock-cells = <0>;
+ clocks = <&input_clk>;
+ };
+
serial: serial@5000 {
compatible = "snps,dw-apb-uart";
reg = <0x5000 0x100>;
diff --git a/arch/arc/configs/hsdk_defconfig b/arch/arc/configs/hsdk_defconfig
index a7114cd..3f35f52 100644
--- a/arch/arc/configs/hsdk_defconfig
+++ b/arch/arc/configs/hsdk_defconfig
@@ -62,6 +62,7 @@ CONFIG_MMC=y
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MMC_DW=y
+CONFIG_CLK_HSDK=y
# CONFIG_IOMMU_SUPPORT is not set
CONFIG_EXT3_FS=y
CONFIG_VFAT_FS=y
--
2.9.3
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