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Changelog: https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.62 Manually rebased: bcm27xx/patches-6.12/950-0358-mmc-sdhci-of-dwcmshc-define-sdio-timeout-clocks.patch Removed upstreamed: backport-6.12/830-v6.18-spi-bcm63xx-fix-premature-CS-deassertion-on-RX-only-transactions.patch[1] All other patches automatically rebased. 1. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.12.62&id=e31194bf494f6900a5f96f55ed194a00e458f8d1 Build system: x86/64 Build-tested: flogic/glinet_gl-mt6000, ramips/tplink_archer-a6-v3, x86/64-glibc Run-tested: flogic/glinet_gl-mt6000, ramips/tplink_archer-a6-v3, x86/64-glibc Signed-off-by: John Audia <therealgraysky@proton.me> Link: https://github.com/openwrt/openwrt/pull/21126 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
43 lines
1.6 KiB
Diff
43 lines
1.6 KiB
Diff
From c7ce6453b769c45006ed4983762f81e130878171 Mon Sep 17 00:00:00 2001
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From: Shawn Lin <shawn.lin@rock-chips.com>
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Date: Wed, 26 Nov 2025 07:26:39 +0800
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Subject: [PATCH] mmc: sdhci-of-dwcmshc: Disable internal clock auto gate for
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Rockchip SOCs
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Enabling CMDQ support can lead to random occurrences of the error log when
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there are RPMB access and data flush executed:
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"mmc2: Timeout waiting for hardware interrupt."
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Enabling CMDQ and then issuing a DCMD as the final command before disabling
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it causes the eMMC controller to auto-gate its internal clock. Chip simulation
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shows this results in a state machine mismatch after CMDQ mode exit, triggering
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data-timeout errors for all subsequent read and write operations.
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Therefore, the auto-clock-gate function must be disabled whenever CMDQ is
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enabled.
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Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
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Acked-by: Adrian Hunter <adrian.hunter@intel.com>
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Fixes: fda1e0af7c28 ("mmc: sdhci-of-dwcmshc: Add command queue support for rockchip SOCs")
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Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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---
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drivers/mmc/host/sdhci-of-dwcmshc.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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--- a/drivers/mmc/host/sdhci-of-dwcmshc.c
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+++ b/drivers/mmc/host/sdhci-of-dwcmshc.c
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@@ -709,10 +709,11 @@ static void dwcmshc_rk3568_set_clock(str
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sdhci_set_clock(host, clock);
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- /* Disable cmd conflict check */
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+ /* Disable cmd conflict check and internal clock gate */
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reg = dwc_priv->vendor_specific_area1 + DWCMSHC_HOST_CTRL3;
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extra = sdhci_readl(host, reg);
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extra &= ~BIT(0);
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+ extra |= BIT(4);
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sdhci_writel(host, extra, reg);
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if (clock <= 52000000) {
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