From: Cyrille Pitchen <cyrille.pitchen@xxxxxxxxxxxxx>
This patch enables the QSPI0 controller, configures its pin muxing and
declares a jedec,spi-nor memory.
sama5d2 Xplained RevB and RevC use the Macronix MX25L25673G flash
memory which advertises a maximum frequency of 80MHz for Quad IO
Fast Read. Set the spi-max-frequency to 80MHz knowing that actually
the QSPI drver will set the SPI bus clock to 166MHz / 3 = 55.3MHz.
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@xxxxxxxxxxxxx>
Tested-by: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx>
Signed-off-by: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx>
---
arch/arm/boot/dts/at91-sama5d2_xplained.dts | 68 +++++++++++++++++++++
1 file changed, 68 insertions(+)
diff --git a/arch/arm/boot/dts/at91-sama5d2_xplained.dts b/arch/arm/boot/dts/at91-sama5d2_xplained.dts
index 055ee53e4773..e0c6cff1a312 100644
--- a/arch/arm/boot/dts/at91-sama5d2_xplained.dts
+++ b/arch/arm/boot/dts/at91-sama5d2_xplained.dts
@@ -72,6 +72,58 @@
};
apb {
+ qspi0: spi@f0020000 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_qspi0_default>;
+ status = "disabled"; /* conflict with sdmmc1 */
+
+ flash@0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <80000000>;
+ spi-tx-bus-width = <4>;
+ spi-rx-bus-width = <4>;
+ m25p,fast-read;
+
+ at91bootstrap@00000000 {
+ label = "at91bootstrap";
+ reg = <0x00000000 0x00040000>;
+ };
+
+ bootloader@00040000 {
+ label = "bootloader";
+ reg = <0x00040000 0x000c0000>;
+ };
+
+ bootloaderenvred@00100000 {
+ label = "bootloader env redundant";
+ reg = <0x00100000 0x00040000>;
+ };
+
+ bootloaderenv@00140000 {
+ label = "bootloader env";
+ reg = <0x00140000 0x00040000>;
+ };
+
+ dtb@00180000 {
+ label = "device tree";
+ reg = <0x00180000 0x00080000>;
+ };
+
+ kernel@00200000 {
+ label = "kernel";
+ reg = <0x00200000 0x00600000>;
+ };
+
+ misc@00800000 {
+ label = "misc";
+ reg = <0x00800000 0x00000000>;
+ };
+ };
+ };
+
spi0: spi@f8000000 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_spi0_default>;
@@ -535,6 +587,22 @@
bias-disable;
};
+ pinctrl_qspi0_default: qspi0_default {
+ sck_cs {
+ pinmux = <PIN_PA22__QSPI0_SCK>,
+ <PIN_PA23__QSPI0_CS>;
+ bias-disable;
+ };
+
+ data {
+ pinmux = <PIN_PA24__QSPI0_IO0>,
+ <PIN_PA25__QSPI0_IO1>,
+ <PIN_PA26__QSPI0_IO2>,
+ <PIN_PA27__QSPI0_IO3>;
+ bias-pull-up;
+ };
+ };
+
pinctrl_sdmmc0_default: sdmmc0_default {
cmd_data {
pinmux = <PIN_PA1__SDMMC0_CMD>,
--
2.23.0
