From: Yangbo Lu <yangbo.lu@freescale.com>
To: <linuxppc-dev@lists.ozlabs.org>, <linux-kernel@vger.kernel.org>,
<scottwood@freescale.com>
Cc: Yangbo Lu <yangbo.lu@freescale.com>
Subject: [PATCH v2, 2/2] mmc: sdhci-pltfm: enable interrupt mode to detect card
Date: Thu, 14 May 2015 14:40:48 +0800 [thread overview]
Message-ID: <1431585648-35130-1-git-send-email-yangbo.lu@freescale.com> (raw)
Enable interrupt mode to detect card instead of polling mode
for P1020/P4080/P5020/P5040/T1040 by removing the quirk
SDHCI_QUIRK_BROKEN_CARD_DETECTION. This could improve data
transferring performance and avoid the call trace caused by
polling card status sometime.
Signed-off-by: Yangbo Lu <yangbo.lu@freescale.com>
----
Changes for v2:
- Aligned all "of_device_is_compatibles" in same column
---
drivers/mmc/host/sdhci-pltfm.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c
index c5b01d6..97128f3 100644
--- a/drivers/mmc/host/sdhci-pltfm.c
+++ b/drivers/mmc/host/sdhci-pltfm.c
@@ -102,6 +102,13 @@ void sdhci_get_of_property(struct platform_device *pdev)
of_device_is_compatible(np, "fsl,mpc8536-esdhc"))
host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
+ if (of_device_is_compatible(np, "fsl,p5040-esdhc") ||
+ of_device_is_compatible(np, "fsl,p5020-esdhc") ||
+ of_device_is_compatible(np, "fsl,p4080-esdhc") ||
+ of_device_is_compatible(np, "fsl,p1020-esdhc") ||
+ of_device_is_compatible(np, "fsl,t1040-esdhc"))
+ host->quirks &= ~SDHCI_QUIRK_BROKEN_CARD_DETECTION;
+
clk = of_get_property(np, "clock-frequency", &size);
if (clk && size == sizeof(*clk) && *clk)
pltfm_host->clock = be32_to_cpup(clk);
--
2.1.0.27.g96db324
reply other threads:[~2015-05-14 6:44 UTC|newest]
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