arm64: dts: mediatek: asurada: Add SPI NOR flash memory

Add support for the SPI NOR flash memory present on the Asurada
platform.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20220629155956.1138955-20-nfraprado@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
index a5625b3..4b31443 100644 (file)
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
@@ -241,6 +241,23 @@
        mediatek,mic-type-2 = <2>; /* DMIC */
 };
 
+&nor_flash {
+       status = "okay";
+
+       pinctrl-names = "default";
+       pinctrl-0 = <&nor_flash_pins>;
+       assigned-clocks = <&topckgen CLK_TOP_SFLASH_SEL>;
+       assigned-clock-parents = <&topckgen CLK_TOP_UNIVPLL_D6_D8>;
+
+       flash@0 {
+               compatible = "winbond,w25q64jwm", "jedec,spi-nor";
+               reg = <0>;
+               spi-max-frequency = <52000000>;
+               spi-rx-bus-width = <2>;
+               spi-tx-bus-width = <2>;
+       };
+};
+
 &pcie {
        pinctrl-names = "default";
        pinctrl-0 = <&pcie_pins>;
@@ -658,6 +675,29 @@
                };
        };
 
+       nor_flash_pins: nor-flash-default-pins {
+               pins-cs-io1 {
+                       pinmux = <PINMUX_GPIO24__FUNC_SPINOR_CS>,
+                                <PINMUX_GPIO28__FUNC_SPINOR_IO1>;
+                       input-enable;
+                       bias-pull-up;
+                       drive-strength = <10>;
+               };
+
+               pins-io0 {
+                       pinmux = <PINMUX_GPIO27__FUNC_SPINOR_IO0>;
+                       bias-pull-up;
+                       drive-strength = <10>;
+               };
+
+               pins-clk {
+                       pinmux = <PINMUX_GPIO25__FUNC_SPINOR_CK>;
+                       input-enable;
+                       bias-pull-up;
+                       drive-strength = <10>;
+               };
+       };
+
        pcie_pins: pcie-default-pins {
                pins-pcie-wake {
                        pinmux = <PINMUX_GPIO63__FUNC_PCIE_WAKE_N>;