From: Wolfram Sang <wsa+renesas@sang-engineering.com>
Date: Thu, 3 Apr 2025 06:43:37 +0000 (+0200)
Subject: ARM: dts: at91: usb_a9g20: add SPI EEPROM
X-Git-Tag: ceph-for-6.17-rc6~710^2~14^2~15
X-Git-Url: http://git.apps.os.sepia.ceph.com/?a=commitdiff_plain;h=6f7549bdb9868009873745439500a6fe15b8513e;p=ceph-client.git

ARM: dts: at91: usb_a9g20: add SPI EEPROM

Schematics and board layout indicate that versions with a dataflash
instead of an EEPROM might exist. Let's handle that once we have
hardware to test.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20250403064336.4846-2-wsa+renesas@sang-engineering.com
Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
---

diff --git a/arch/arm/boot/dts/microchip/usb_a9g20.dts b/arch/arm/boot/dts/microchip/usb_a9g20.dts
index a2f748141d4b5..16caca3ec00d1 100644
--- a/arch/arm/boot/dts/microchip/usb_a9g20.dts
+++ b/arch/arm/boot/dts/microchip/usb_a9g20.dts
@@ -11,3 +11,17 @@
 	model = "Calao USB A9G20";
 	compatible = "calao,usb-a9g20", "atmel,at91sam9g20", "atmel,at91sam9";
 };
+
+&spi0 {
+	cs-gpios = <&pioC 11 GPIO_ACTIVE_LOW>;
+	status = "okay";
+	/* TODO: Some revisions might have a dataflash here instead of an EEPROM */
+	eeprom@0 {
+		compatible = "st,m95640", "atmel,at25";
+		reg = <0>;
+		spi-max-frequency = <2000000>;
+		size = <8192>;
+		pagesize = <32>;
+		address-width = <16>;
+	};
+};