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