From: Michael Garofalo <officialtechflashyt@gmail.com>
To: adrian.hunter@intel.com, ulf.hansson@linaro.org
Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
Michael Garofalo <officialTechflashYT@gmail.com>
Subject: [PATCH 2/2] mmc: sdhci-of-hlwd: disable bounce buffer usage
Date: Sun, 5 Oct 2025 18:37:00 -0700 [thread overview]
Message-ID: <20251006013700.2272166-3-officialTechflashYT@gmail.com> (raw)
In-Reply-To: <20251006013700.2272166-1-officialTechflashYT@gmail.com>
On the SDHCI controller in the Nintendo Wii's "Hollywood" chipset, using
bounce buffers causes the internal Broadcom 4318 Wi-Fi to fail on most
data transfers. Disabling bounce buffer usage allows reliable
transmission again.
Signed-off-by: Michael Garofalo <officialTechflashYT@gmail.com>
---
drivers/mmc/host/sdhci-of-hlwd.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/mmc/host/sdhci-of-hlwd.c b/drivers/mmc/host/sdhci-of-hlwd.c
index 5bb845d13599..59736ae85c14 100644
--- a/drivers/mmc/host/sdhci-of-hlwd.c
+++ b/drivers/mmc/host/sdhci-of-hlwd.c
@@ -63,6 +63,7 @@ static const struct sdhci_ops sdhci_hlwd_ops = {
static const struct sdhci_pltfm_data sdhci_hlwd_pdata = {
.quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
SDHCI_QUIRK_32BIT_DMA_SIZE,
+ .quirks2 = SDHCI_QUIRK2_NO_BOUNCE_BUFFER,
.ops = &sdhci_hlwd_ops,
};
--
2.51.0
next prev parent reply other threads:[~2025-10-06 1:37 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-06 1:36 [PATCH 0/2] mmc: sdhci: add quirk to disable bounce buffer Michael Garofalo
2025-10-06 1:36 ` [PATCH 1/2] mmc: sdhci: add quirk to disable the " Michael Garofalo
2025-10-06 1:37 ` Michael Garofalo [this message]
2025-10-06 7:35 ` [PATCH 0/2] mmc: sdhci: add quirk to disable " Adrian Hunter
2025-10-06 7:38 ` Adrian Hunter
2025-10-06 9:15 ` Michael Garofalo
2025-10-06 9:28 ` Michael Garofalo
2025-10-06 10:46 ` Adrian Hunter
2025-10-08 1:10 ` Michael Garofalo
2025-10-08 11:30 ` Adrian Hunter
2025-10-10 21:16 ` Michael Garofalo
2025-10-13 6:40 ` Adrian Hunter
2025-10-20 7:53 ` Michael Garofalo
2025-10-24 5:36 ` Adrian Hunter
2025-10-24 8:32 ` Linus Walleij
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