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linux (RPi): add patch to disable SD SQE by default on RPi5
This is still too experimental and seems to cause issues with some SD cards. Signed-off-by: Matthias Reichl <hias@horus.com>
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From be6a324c450c40a2c2c9461fcd8258ec07338d0a Mon Sep 17 00:00:00 2001
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From: Matthias Reichl <hias@horus.com>
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Date: Wed, 13 Nov 2024 00:14:13 +0100
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Subject: [PATCH 1/3] Revert "DTS: bcm2712; re-enable SD slot CQE by default on
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Pi 5"
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This reverts commit 48a15bc46004025776880a091d47a22e03449acc.
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CQE still seems to experimental and cause issues with some cards
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so keep it disabled by default for now.
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---
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arch/arm/boot/dts/overlays/README | 6 +++---
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arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts | 1 -
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2 files changed, 3 insertions(+), 4 deletions(-)
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diff --git a/arch/arm/boot/dts/overlays/README b/arch/arm/boot/dts/overlays/README
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index 5c6344eb6f98..af1d82cffd47 100644
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -378,9 +378,9 @@ Params:
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non-lite SKU of CM4).
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(default "on")
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- sd_cqe Set to "off" to disable Command Queueing if you
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- have an incompatible Class A2 SD card
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- (Pi 5 only, default "on")
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+ sd_cqe Use to enable Command Queueing on the SD
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+ interface for faster Class A2 card performance
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+ (Pi 5 only, default "off")
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sd_overclock Clock (in MHz) to use when the MMC framework
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requests 50MHz
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diff --git a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts
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index a63ee4b678a1..56d416e82dd5 100644
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--- a/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts
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+++ b/arch/arm64/boot/dts/broadcom/bcm2712-rpi-5-b.dts
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@@ -365,7 +365,6 @@ &sdio1 {
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sd-uhs-sdr50;
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sd-uhs-ddr50;
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sd-uhs-sdr104;
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- supports-cqe;
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cd-gpios = <&gio_aon 5 GPIO_ACTIVE_LOW>;
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//no-1-8-v;
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status = "okay";
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--
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2.39.5
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