Re: [REGRESSION] sdhci no longer detects SD cards on LX2160A
From: Russell King - ARM Linux admin <linux@armlinux.org.uk>
Date: 2019-09-17 13:33:35
Also in:
linux-mmc
On Tue, Sep 17, 2019 at 10:24:57AM -0300, Fabio Estevam wrote:
quoted hunk ↗ jump to hunk
Hi Russell, On Tue, Sep 17, 2019 at 10:10 AM Russell King - ARM Linux admin [off-list ref] wrote:quoted
Will suggested reverting bd2e75633c80 ("dma-contiguous: use fallback alloc_pages for single pages") which has been implicated in the same problem here: https://www.spinics.net/lists/arm-kernel/msg750623.htmlIt seems that the final fix was: https://lore.kernel.org/patchwork/patch/1121600/ Does it work for you if we follow the same idea?--- a/drivers/mmc/host/sdhci-of-esdhc.c +++ b/drivers/mmc/host/sdhci-of-esdhc.c@@ -1105,6 +1105,7 @@ static int sdhci_esdhc_probe(struct platform_device *pdev) esdhc_init(pdev, host); + sdhci_enable_v4_mode(host); sdhci_get_of_property(pdev); pltfm_host = sdhci_priv(host);
That attempts to set bit 12 of the host control register 2 (0x3e). The LX2160A documentation states that bit 28 of 0x3c (they're 32-bit wide registers there) is "reserved". So, you're asking for a documented reserved bit to be set... -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up According to speedtest.net: 11.9Mbps down 500kbps up _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel