diff options
| author | Eugeniy Paltsev | 2018-03-26 15:57:38 +0300 |
|---|---|---|
| committer | Alexey Brodkin | 2018-04-02 12:27:56 +0300 |
| commit | f770b3ee1830a5fbd3b44cd051d9e5468339d651 (patch) | |
| tree | f229ce78100ee5d5268613ffdc412209d62e32f1 /arch | |
| parent | ada8affdfe32bb621db09332a8267bab4ae5f312 (diff) | |
ARC: HSDK: Enable SPI flash support
HSDK board has sst26wf016 SPI flash IC which we want to support.
Add SPI controller, CS-gpio and SPI flash nodes to hsdk device tree.
Enable corresponding options in hsdk defconfig.
For SPI write functionality to work we need [1] which
adds support of sst26xxx ICs.
[1] https://patchwork.ozlabs.org/project/uboot/list/?series=35796
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arc/dts/hsdk.dts | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/arc/dts/hsdk.dts b/arch/arc/dts/hsdk.dts index 09f3fe9a374..80b864af743 100644 --- a/arch/arc/dts/hsdk.dts +++ b/arch/arc/dts/hsdk.dts @@ -14,6 +14,7 @@ aliases { console = &uart0; + spi0 = &spi0; }; cpu_card { @@ -83,4 +84,29 @@ compatible = "generic-ohci"; reg = <0xf0060000 0x100>; }; + + spi0: spi@f0020000 { + compatible = "snps,dw-apb-ssi"; + reg = <0xf0020000 0x1000>; + #address-cells = <1>; + #size-cells = <0>; + spi-max-frequency = <4000000>; + clocks = <&cgu_clk CLK_SYS_SPI_REF>; + clock-names = "spi_clk"; + cs-gpio = <&cs_gpio 0>; + spi_flash@0 { + compatible = "spi-flash"; + reg = <0>; + spi-max-frequency = <4000000>; + }; + }; + + cs_gpio: gpio@f00014b0 { + compatible = "snps,hsdk-creg-gpio"; + reg = <0xf00014b0 0x4>; + gpio-controller; + #gpio-cells = <1>; + gpio-bank-name = "hsdk-spi-cs"; + gpio-count = <1>; + }; }; |