* [PATCH] ARM: dts: at91: usb_a9g20: add SPI EEPROM
@ 2025-04-03 6:43 Wolfram Sang
2025-04-11 14:31 ` Claudiu Beznea
0 siblings, 1 reply; 2+ messages in thread
From: Wolfram Sang @ 2025-04-03 6:43 UTC (permalink / raw)
To: linux-arm-kernel
Cc: Wolfram Sang, Nicolas Ferre, Alexandre Belloni, Claudiu Beznea,
Rob Herring, Krzysztof Kozlowski, Conor Dooley, devicetree
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>
---
arch/arm/boot/dts/microchip/usb_a9g20.dts | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/arch/arm/boot/dts/microchip/usb_a9g20.dts b/arch/arm/boot/dts/microchip/usb_a9g20.dts
index bdaf35c6526e..555291cd30b3 100644
--- a/arch/arm/boot/dts/microchip/usb_a9g20.dts
+++ b/arch/arm/boot/dts/microchip/usb_a9g20.dts
@@ -12,3 +12,17 @@ / {
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>;
+ };
+};
--
2.47.2
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] ARM: dts: at91: usb_a9g20: add SPI EEPROM
2025-04-03 6:43 [PATCH] ARM: dts: at91: usb_a9g20: add SPI EEPROM Wolfram Sang
@ 2025-04-11 14:31 ` Claudiu Beznea
0 siblings, 0 replies; 2+ messages in thread
From: Claudiu Beznea @ 2025-04-11 14:31 UTC (permalink / raw)
To: Wolfram Sang, linux-arm-kernel
Cc: Nicolas Ferre, Alexandre Belloni, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, devicetree
On 03.04.2025 09:43, Wolfram Sang wrote:
> 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>
Applied to at91-dt, thanks!
^ permalink raw reply [flat|nested] 2+ messages in thread
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