openwrt/target/linux/bcm27xx/patches-6.6/950-1096-DTS-bcm2712-don-t-assume-L1-sub-state-support-at-chi.patch
Álvaro Fernández Rojas 8c405cdccc bcm27xx: add 6.6 kernel patches
The patches were generated from the RPi repo with the following command:
git format-patch v6.6.34..rpi-6.1.y

Some patches needed rebasing and, as usual, the applied and reverted, wireless
drivers, Github workflows, READMEs and defconfigs patches were removed.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2024-06-18 18:52:49 +02:00

43 lines
1.3 KiB
Diff

From e99d1768b77e77182d5e7ac9c335c7d8cbd88963 Mon Sep 17 00:00:00 2001
From: Jonathan Bell <jonathan@raspberrypi.com>
Date: Mon, 20 May 2024 14:45:37 +0100
Subject: [PATCH 1096/1135] DTS: bcm2712: don't assume L1 sub-state support at
chip level
L1 sub-states require the connection of the CLKREQ# auxiliary signal
which is a PCB-level decision, and also depends on the vagrancies of
adapters/interposers/slots that may exist between the chip and the
endpoint.
If this parameter is present, and the RC driver sees an L1 substate
capability in the endpoint, then the result is a broken link if CLKREQ#
isn't end-to-end connected - regardless of the state of the L1.x enable
bits in the RC.
Board-specific methods (HAT+ overlay, board DTB) should define this
property if required.
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
---
arch/arm/boot/dts/broadcom/bcm2712.dtsi | 2 --
1 file changed, 2 deletions(-)
--- a/arch/arm/boot/dts/broadcom/bcm2712.dtsi
+++ b/arch/arm/boot/dts/broadcom/bcm2712.dtsi
@@ -1063,7 +1063,6 @@
0x00 0x00000000
0x10 0x00000000>;
- brcm,enable-l1ss;
status = "disabled";
};
@@ -1124,7 +1123,6 @@
0x00 0x00000000
0x10 0x00000000>;
- brcm,enable-l1ss;
status = "disabled";
};