From b19d3a55d4789a657c3c6b247ab5c9d8611a8a86 Mon Sep 17 00:00:00 2001 From: Ahmad Fatoum Date: Wed, 21 Oct 2020 12:28:56 +0200 Subject: [PATCH] ARM: dts: stm32: support child mfd cells for the stm32mp1 TAMP syscon The stm32mp1 TAMP peripheral has 32 backup registers that survive a warm reset. This makes them suitable for storing a reboot mode, which the vendor's kernel tree is already doing[0]. The actual syscon-reboot-mode child node can be added by a board.dts or fixed up by the bootloader. For the child node to be probed, the compatible needs to include simple-mfd. The binding now specifies this, so have the SoC dtsi adhere to it. [0]: https://github.com/STMicroelectronics/linux/commit/2e9bfc29dd Signed-off-by: Ahmad Fatoum Signed-off-by: Alexandre Torgue --- arch/arm/boot/dts/stm32mp151.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/stm32mp151.dtsi b/arch/arm/boot/dts/stm32mp151.dtsi index a333c633a112..3c75abacb374 100644 --- a/arch/arm/boot/dts/stm32mp151.dtsi +++ b/arch/arm/boot/dts/stm32mp151.dtsi @@ -1574,7 +1574,7 @@ i2c6: i2c@5c009000 { }; tamp: tamp@5c00a000 { - compatible = "st,stm32-tamp", "syscon"; + compatible = "st,stm32-tamp", "syscon", "simple-mfd"; reg = <0x5c00a000 0x400>; };