From: Fabrizio Castro <fabrizio.castro@xxxxxxxxxxxxxx>
Add support for the SPI NOR device used to boot up the system
to the System on Module DT.
Signed-off-by: Fabrizio Castro <fabrizio.castro@xxxxxxxxxxxxxx>
Signed-off-by: Chris Paterson <chris.paterson2@xxxxxxxxxxx>
---
This patch is based on renesas-devel-20170913-v4.13.
This patch is dependant on:
- "of: add vendor prefix for Silicon Storage Technology Inc."
- "doc: dt: mtd: Add sst25vf016b to the list of supported chip names"
arch/arm/boot/dts/r8a7743-iwg20m.dtsi | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/arch/arm/boot/dts/r8a7743-iwg20m.dtsi b/arch/arm/boot/dts/r8a7743-iwg20m.dtsi
index 4119737..75a8ca5 100644
--- a/arch/arm/boot/dts/r8a7743-iwg20m.dtsi
+++ b/arch/arm/boot/dts/r8a7743-iwg20m.dtsi
@@ -44,6 +44,11 @@
function = "mmc";
};
+ qspi_pins: qspi {
+ groups = "qspi_ctrl", "qspi_data2";
+ function = "qspi";
+ };
+
sdhi0_pins: sd0 {
groups = "sdhi0_data4", "sdhi0_ctrl";
function = "sdhi0";
@@ -61,6 +66,27 @@
status = "okay";
};
+&qspi {
+ pinctrl-0 = <&qspi_pins>;
+ pinctrl-names = "default";
+
+ status = "okay";
+
+ /* WARNING - This device contains the bootloader. Handle with care. */
+ flash: flash@0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "sst,sst25vf016b", "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <50000000>;
+ spi-tx-bus-width = <1>;
+ spi-rx-bus-width = <1>;
+ m25p,fast-read;
+ spi-cpol;
+ spi-cpha;
+ };
+};
+
&sdhi0 {
pinctrl-0 = <&sdhi0_pins>;
pinctrl-names = "default";
--
1.9.1
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