From a350dc623e3678b9bc6c6385df72a66a1ee69c7f Mon Sep 17 00:00:00 2001 From: Jae Hyun Yoo Date: Mon, 8 Nov 2021 11:01:55 -0800 Subject: ARM: dts: aspeed: add LCLK setting into LPC IBT node If LPC BT driver is registered ahead of lpc-ctrl module, LPC BT hardware block will be enabled without heart beating of LCLK until lpc-ctrl enables the LCLK. This issue causes improper handling on host interrupts when the host sends interrupts in that time frame. Then kernel eventually forcibly disables the interrupt with dumping stack and printing a 'nobody cared this irq' message out. To prevent this issue, all LPC sub drivers should enable LCLK individually so this patch adds 'clocks' property setting into LPC IBT node as one of required properties to enable the LCLK by the LPC IBT driver. Note: dtbs should be re-compiled after applying this change since it's adding a new required property otherwise the driver will not be probed correctly. Signed-off-by: Jae Hyun Yoo Reviewed-by: Joel Stanley Reviewed-by: Andrew Jeffery Link: https://lore.kernel.org/r/20211108190200.290957-2-jae.hyun.yoo@intel.com Signed-off-by: Joel Stanley --- arch/arm/boot/dts/aspeed-g5.dtsi | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/arm/boot/dts/aspeed-g5.dtsi') diff --git a/arch/arm/boot/dts/aspeed-g5.dtsi b/arch/arm/boot/dts/aspeed-g5.dtsi index c7049454c7cb..d0cc4be2de59 100644 --- a/arch/arm/boot/dts/aspeed-g5.dtsi +++ b/arch/arm/boot/dts/aspeed-g5.dtsi @@ -507,6 +507,7 @@ compatible = "aspeed,ast2500-ibt-bmc"; reg = <0x140 0x18>; interrupts = <8>; + clocks = <&syscon ASPEED_CLK_GATE_LCLK>; status = "disabled"; }; }; -- cgit