[PATCH] ARM: shmobile: alt: Add QSPI device to DT
Simon Horman
horms+renesas at verge.net.au
Sun Nov 29 22:13:10 PST 2015
Enable the QSPI controller in the alt device tree.
Based similar work for the silk board by by Vladimir Barinov and
Sergei Shtylyov.
Cc: Vladimir Barinov <vladimir.barinov at cogentembedded.com>
Cc: Sergei Shtylyov <sergei.shtylyov at cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas at verge.net.au>
---
Testedon top of renesas-devel-20151126-v4.4-rc2.
Read /dev/mtd0 with 512K blocks at 6.5Mb/s
---
arch/arm/boot/dts/r8a7794-alt.dts | 45 +++++++++++++++++++++++++++++++++++++++
1 file changed, 45 insertions(+)
diff --git a/arch/arm/boot/dts/r8a7794-alt.dts b/arch/arm/boot/dts/r8a7794-alt.dts
index 767d9224d6cc..0dae87639328 100644
--- a/arch/arm/boot/dts/r8a7794-alt.dts
+++ b/arch/arm/boot/dts/r8a7794-alt.dts
@@ -138,6 +138,13 @@
status = "okay";
};
+&pfc {
+ qspi_pins: spi0 {
+ renesas,groups = "qspi_ctrl", "qspi_data4";
+ renesas,function = "qspi";
+ };
+};
+
ðer {
pinctrl-0 = <ðer_pins &phy1_pins>;
pinctrl-names = "default";
@@ -197,3 +204,41 @@
status = "okay";
};
+
+&qspi {
+ pinctrl-0 = <&qspi_pins>;
+ pinctrl-names = "default";
+
+ status = "okay";
+
+ flash at 0 {
+ compatible = "spansion,s25fl512s", "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <30000000>;
+ spi-tx-bus-width = <4>;
+ spi-rx-bus-width = <4>;
+ spi-cpol;
+ spi-cpha;
+ m25p,fast-read;
+
+ partitions {
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition at 0 {
+ label = "loader";
+ reg = <0x00000000 0x00040000>;
+ read-only;
+ };
+ partition at 40000 {
+ label = "user";
+ reg = <0x00040000 0x00400000>;
+ read-only;
+ };
+ partition at 440000 {
+ label = "flash";
+ reg = <0x00440000 0x03bc0000>;
+ };
+ };
+ };
+};
--
2.1.4
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