From: Yixun Lan <dlan@kernel.org>
To: Adrian Hunter <adrian.hunter@intel.com>, Ulf Hansson <ulfh@kernel.org>
Cc: Long Wan <long.wan@linux.spacemit.com>,
linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-riscv@lists.infradead.org, spacemit@lists.linux.dev,
Yixun Lan <dlan@kernel.org>
Subject: [PATCH 4/7] mmc: sdhci-of-k1: Improve power control
Date: Wed, 02 Sep 2026 08:04:25 +0000 [thread overview]
Message-ID: <20260902-07-k3-sdhci-fix-v1-4-b15c5d0f64fd@kernel.org> (raw)
In-Reply-To: <20260902-07-k3-sdhci-fix-v1-0-b15c5d0f64fd@kernel.org>
From: Long Wan <long.wan@linux.spacemit.com>
The default sdhci_set_power() skips the SD bus voltage select field
entirely when a vmmc regulator is present, leaving SD Bus Power in off
state of the power control register. To fix this, configure the bus
voltage explicitly.
Fixes: e5502d15b0f3 ("mmc: sdhci-of-k1: add support for SpacemiT K1 SoC")
Signed-off-by: Long Wan <long.wan@linux.spacemit.com>
Signed-off-by: Yixun Lan <dlan@kernel.org>
---
drivers/mmc/host/sdhci-of-k1.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/mmc/host/sdhci-of-k1.c b/drivers/mmc/host/sdhci-of-k1.c
index 5dccdd4b217d..be770e8a9884 100644
--- a/drivers/mmc/host/sdhci-of-k1.c
+++ b/drivers/mmc/host/sdhci-of-k1.c
@@ -496,6 +496,7 @@ static const struct sdhci_ops spacemit_sdhci_ops = {
.reset = spacemit_sdhci_reset,
.set_bus_width = sdhci_set_bus_width,
.set_clock = spacemit_sdhci_set_clock,
+ .set_power = sdhci_set_power_and_bus_voltage,
.set_uhs_signaling = spacemit_sdhci_set_uhs_signaling,
.platform_execute_tuning = spacemit_sdhci_execute_tuning,
};
--
2.55.0
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next prev parent reply other threads:[~2026-09-02 8:05 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-02 8:04 [PATCH 0/7] mmc: spacemit: improve clock and tuning logic Yixun Lan
2026-09-02 8:04 ` [PATCH 1/7] mmc: sdhci-of-k1: no pinctrl state switching Yixun Lan
2026-09-02 8:04 ` [PATCH 2/7] mmc: sdhci-of-k1: drop duplicated voltage settings Yixun Lan
2026-09-02 8:04 ` [PATCH 3/7] mmc: sdhci-of-k1: configure PHY mode Yixun Lan
2026-09-02 8:04 ` Yixun Lan [this message]
2026-09-02 8:04 ` [PATCH 5/7] mmc: sdhci-of-k1: Use finest delay granularity for RX tuning Yixun Lan
2026-09-02 8:04 ` [PATCH 6/7] mmc: sdhci-of-k1: Improve RX tuning window Yixun Lan
2026-09-07 15:53 ` Hung-Chun Tseng
2026-09-02 8:04 ` [PATCH 7/7] mmc: sdhci-of-k1: Implement SD clock gating for voltage switch Yixun Lan
2026-09-09 8:40 ` [PATCH 0/7] mmc: spacemit: improve clock and tuning logic Adrian Hunter
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