From 4fcbe1f5b6ba71e0c464a303e3769bf1ce1fe54c Mon Sep 17 00:00:00 2001 From: Oskar Senft Date: Tue, 30 Nov 2021 13:48:55 -0500 Subject: [PATCH] ARM: dts: aspeed: tyan-s7106: Add uart_routing and fix vuart config Configure the vuart in such a way that it does not inhibit the SuperIO's UART from functioning correctly. This allows the same DTS to be used for both configurations with SuperIO and VUART (depending on the BIOS build). The decision on whether to actually enable VUART can then be made at runtime. This change also enables the new uart_routing driver for the SuperIO case. Signed-off-by: Oskar Senft Link: https://lore.kernel.org/r/20211130184855.1779353-1-osk@google.com Signed-off-by: Joel Stanley --- arch/arm/boot/dts/aspeed-bmc-tyan-s7106.dts | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/arm/boot/dts/aspeed-bmc-tyan-s7106.dts b/arch/arm/boot/dts/aspeed-bmc-tyan-s7106.dts index 60ac6d3f03b5..aff27c1d4b06 100644 --- a/arch/arm/boot/dts/aspeed-bmc-tyan-s7106.dts +++ b/arch/arm/boot/dts/aspeed-bmc-tyan-s7106.dts @@ -3,6 +3,7 @@ #include "aspeed-g5.dtsi" #include +#include / { model = "Tyan S7106 BMC"; @@ -127,8 +128,23 @@ status = "okay"; }; +&uart_routing { + status = "okay"; +}; + &vuart { status = "okay"; + + /* We enable the VUART here, but leave it in a state that does + * not interfere with the SuperIO. The goal is to have both the + * VUART and the SuperIO available and decide at runtime whether + * the VUART should actually be used. For that reason, configure + * an "invalid" IO address and an IRQ that is not used by the + * BMC. + */ + + aspeed,lpc-io-reg = <0xffff>; + aspeed,lpc-interrupts = <15 IRQ_TYPE_LEVEL_HIGH>; }; &lpc_ctrl { -- 2.20.1