diff options
Diffstat (limited to 'board/olimex/imx233_olinuxino/linux-03-mmc-mxs-mmc-add-broken-cd-property.patch')
| -rw-r--r-- | board/olimex/imx233_olinuxino/linux-03-mmc-mxs-mmc-add-broken-cd-property.patch | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/board/olimex/imx233_olinuxino/linux-03-mmc-mxs-mmc-add-broken-cd-property.patch b/board/olimex/imx233_olinuxino/linux-03-mmc-mxs-mmc-add-broken-cd-property.patch new file mode 100644 index 000000000..b5ceb0343 --- /dev/null +++ b/board/olimex/imx233_olinuxino/linux-03-mmc-mxs-mmc-add-broken-cd-property.patch @@ -0,0 +1,50 @@ +From 1d53196a0d604fcf636203fac21e944b6a9cf275 Mon Sep 17 00:00:00 2001 +From: Hector Palacios <hector.palacios@digi.com> +Date: Wed, 10 Apr 2013 11:13:45 +0200 +Subject: [PATCH 3/3] mmc: mxs-mmc: add broken-cd property + +According to bindings documentation for mmc, the property 'broken-cd' +can be used to indicate card-detection is not available and polling +must be used instead. This patch retrieves this property +and sets a custom flag. On the get_cd() hook, it returns 1 if +the flag is set, to always assume the card is present. + +Signed-off-by: Hector Palacios <hector.palacios@digi.com> +Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> +Signed-off-by: Chris Ball <cjb@laptop.org> +--- + drivers/mmc/host/mxs-mmc.c | 4 +++- + 1 file changed, 3 insertions(+), 1 deletion(-) + +diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c +index c231881..146a53b 100644 +--- a/drivers/mmc/host/mxs-mmc.c ++++ b/drivers/mmc/host/mxs-mmc.c +@@ -73,6 +73,7 @@ struct mxs_mmc_host { + int wp_gpio; + bool wp_inverted; + bool cd_inverted; ++ bool broken_cd; + bool non_removable; + }; + +@@ -97,7 +98,7 @@ static int mxs_mmc_get_cd(struct mmc_host *mmc) + struct mxs_mmc_host *host = mmc_priv(mmc); + struct mxs_ssp *ssp = &host->ssp; + +- return host->non_removable || ++ return host->non_removable || host->broken_cd || + !(readl(ssp->base + HW_SSP_STATUS(ssp)) & + BM_SSP_STATUS_CARD_DETECT) ^ host->cd_inverted; + } +@@ -689,6 +690,7 @@ static int mxs_mmc_probe(struct platform_device *pdev) + mmc->caps |= MMC_CAP_4_BIT_DATA; + else if (bus_width == 8) + mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA; ++ host->broken_cd = of_property_read_bool(np, "broken-cd"); + host->non_removable = of_property_read_bool(np, "non-removable"); + if (host->non_removable) + mmc->caps |= MMC_CAP_NONREMOVABLE; +-- +1.8.1.5 + |