From 0aa7ca5e8fb36c03abf1cbb3bf9358e4d079b7db Mon Sep 17 00:00:00 2001 From: Chanh Nguyen Date: Tue, 6 Aug 2024 07:18:04 +0000 Subject: [PATCH] ARM: dts: aspeed: mtmitchell: Add Riser cards Define the I2C alias ports for the riser cards. Add the i2c muxes to switch to the i2c alias ports and the eeprom nodes to read the FRU contents on riser cards. Signed-off-by: Chanh Nguyen Link: https://lore.kernel.org/r/20240806071806.1666550-4-chanh@os.amperecomputing.com Signed-off-by: Andrew Jeffery Signed-off-by: Joel Stanley --- .../aspeed/aspeed-bmc-ampere-mtmitchell.dts | 64 +++++++++++++++++++ 1 file changed, 64 insertions(+) diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts index 1679911e4fd8..4d2f6e5348ce 100644 --- a/arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts +++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-ampere-mtmitchell.dts @@ -29,6 +29,18 @@ i2c30 = &ocpslot_0; i2c31 = &ocpslot_1; + /* + * i2c bus 32-33 assigned to Riser slot 0-1 + */ + i2c32 = &i2c_riser0; + i2c33 = &i2c_riser1; + + /* + * i2c bus 38-39 assigned to FRU on Riser slot 0-1 + */ + i2c38 = &i2c_riser0_chn_0; + i2c39 = &i2c_riser1_chn_0; + /* * I2C NVMe alias port */ @@ -551,6 +563,58 @@ reg = <0x1f>; }; }; + + i2c_riser0: i2c@2 { + #address-cells = <1>; + #size-cells = <0>; + reg = <0x2>; + + i2c-mux@72 { + compatible = "nxp,pca9546"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0x72>; + i2c-mux-idle-disconnect; + + i2c_riser0_chn_0: i2c@0 { + #address-cells = <1>; + #size-cells = <0>; + reg = <0x0>; + + eeprom@50 { + compatible = "atmel,24c02"; + reg = <0x50>; + pagesize = <16>; + }; + }; + }; + }; + + i2c_riser1: i2c@3 { + #address-cells = <1>; + #size-cells = <0>; + reg = <0x3>; + + i2c-mux@72 { + compatible = "nxp,pca9546"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0x72>; + i2c-mux-idle-disconnect; + + i2c_riser1_chn_0: i2c@0 { + #address-cells = <1>; + #size-cells = <0>; + reg = <0x0>; + + eeprom@50 { + compatible = "atmel,24c02"; + reg = <0x50>; + pagesize = <16>; + }; + }; + }; + }; }; }; -- 2.50.1