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Date: Mon, 11 Aug 2014 14:19:13 +0300 From: Mikko Perttunen <mperttunen@...dia.com> To: <tj@...nel.org>, <swarren@...dotorg.org>, <thierry.reding@...il.com> CC: <linux-ide@...r.kernel.org>, <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>, Mikko Perttunen <mperttunen@...dia.com> Subject: [PATCH] ata: ahci_tegra: Read calibration fuse The original version of the driver did not read the SATA calibration fuse to remove the dependency to the fuse driver. The fuse driver is now merged, so add this functionality. The calibration fuse contains a 2-bit value used to pick a set of calibration values for the SATA pad. Signed-off-by: Mikko Perttunen <mperttunen@...dia.com> --- drivers/ata/ahci_tegra.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/ata/ahci_tegra.c b/drivers/ata/ahci_tegra.c index f1fef74..ad99e0f5 100644 --- a/drivers/ata/ahci_tegra.c +++ b/drivers/ata/ahci_tegra.c @@ -26,6 +26,7 @@ #include <linux/platform_device.h> #include <linux/regulator/consumer.h> #include <soc/tegra/pmc.h> +#include <soc/tegra/fuse.h> #include "ahci.h" #define SATA_CONFIGURATION_0 0x180 @@ -180,9 +181,12 @@ static int tegra_ahci_controller_init(struct ahci_host_priv *hpriv) /* Pad calibration */ - /* FIXME Always use calibration 0. Change this to read the calibration - * fuse once the fuse driver has landed. */ - val = 0; + ret = tegra_fuse_readl(FUSE_SATA_CALIB, &val); + if (ret) { + dev_err(&tegra->pdev->dev, + "failed to read calibration fuse: %d\n", ret); + return ret; + } calib = tegra124_pad_calibration[val & FUSE_SATA_CALIB_MASK]; -- 1.8.1.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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