From: Martin Blumenstingl Date: Mon, 2 Oct 2017 23:28:04 +0000 (+0200) Subject: ARM: dts: meson: add the efuse node X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=2cb51a8ddd69dbd9e6b3d19dfdacd4ebfdd166a8;p=linux.git ARM: dts: meson: add the efuse node Meson6, Meson8 and Meson8b use a similar IP block which has access to 512 bytes of efuse data. During SoC manufacturing some calibration settings for the CVBS connector and the internal temperature sensor are written to this efuse. On some boards it additionally stores for example the MAC addresses. The efuse is enabled on Meson8 and Meson8b but kept disabled on Meson6 since we do not have a clock driver there (which is required to read data from the efuse). Signed-off-by: Martin Blumenstingl Signed-off-by: Kevin Hilman --- diff --git a/arch/arm/boot/dts/meson.dtsi b/arch/arm/boot/dts/meson.dtsi index 3d18ecc2bef1e..4926133077b35 100644 --- a/arch/arm/boot/dts/meson.dtsi +++ b/arch/arm/boot/dts/meson.dtsi @@ -280,5 +280,20 @@ compatible = "amlogic,meson-mx-bootrom", "syscon"; reg = <0xd9040000 0x10000>; }; + + secbus: secbus@da000000 { + compatible = "simple-bus"; + reg = <0xda000000 0x6000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x0 0xda000000 0x6000>; + + efuse: nvmem@0 { + compatible = "amlogic,meson6-efuse"; + reg = <0x0 0x2000>; + #address-cells = <1>; + #size-cells = <1>; + }; + }; }; }; /* end of / */ diff --git a/arch/arm/boot/dts/meson6.dtsi b/arch/arm/boot/dts/meson6.dtsi index ef281d2900527..9b463211339f5 100644 --- a/arch/arm/boot/dts/meson6.dtsi +++ b/arch/arm/boot/dts/meson6.dtsi @@ -84,6 +84,9 @@ }; }; /* end of / */ +&efuse { + status = "disabled"; +}; &uart_AO { clocks = <&xtal>, <&clk81>, <&clk81>; diff --git a/arch/arm/boot/dts/meson8.dtsi b/arch/arm/boot/dts/meson8.dtsi index 871d48d67190a..661287806ead0 100644 --- a/arch/arm/boot/dts/meson8.dtsi +++ b/arch/arm/boot/dts/meson8.dtsi @@ -275,6 +275,12 @@ }; }; +&efuse { + compatible = "amlogic,meson8-efuse"; + clocks = <&clkc CLKID_EFUSE>; + clock-names = "core"; +}; + ðmac { clocks = <&clkc CLKID_ETH>; clock-names = "stmmaceth"; diff --git a/arch/arm/boot/dts/meson8b.dtsi b/arch/arm/boot/dts/meson8b.dtsi index c12646ecef2b4..7ecce8890d21f 100644 --- a/arch/arm/boot/dts/meson8b.dtsi +++ b/arch/arm/boot/dts/meson8b.dtsi @@ -195,6 +195,13 @@ }; }; + +&efuse { + compatible = "amlogic,meson8b-efuse"; + clocks = <&clkc CLKID_EFUSE>; + clock-names = "core"; +}; + ðmac { clocks = <&clkc CLKID_ETH>; clock-names = "stmmaceth";