diff options
Diffstat (limited to 'configs/platform-v7a/patches/barebox-2017.08.0/0005-mci-mmci-add-DT-support.patch')
| -rw-r--r-- | configs/platform-v7a/patches/barebox-2017.08.0/0005-mci-mmci-add-DT-support.patch | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/configs/platform-v7a/patches/barebox-2017.08.0/0005-mci-mmci-add-DT-support.patch b/configs/platform-v7a/patches/barebox-2017.08.0/0005-mci-mmci-add-DT-support.patch new file mode 100644 index 0000000..2564644 --- /dev/null +++ b/configs/platform-v7a/patches/barebox-2017.08.0/0005-mci-mmci-add-DT-support.patch @@ -0,0 +1,82 @@ +From: Lucas Stach <l.stach@pengutronix.de> +Date: Mon, 4 Sep 2017 11:43:38 +0200 +Subject: [PATCH] mci: mmci: add DT support + +Just adds the minimal implementation to fill platform_data from +the DT properties with Linux binding. + +Signed-off-by: Lucas Stach <l.stach@pengutronix.de> +--- + drivers/mci/mmci.c | 39 ++++++++++++++++++++++++++++++++++++--- + 1 file changed, 36 insertions(+), 3 deletions(-) + +diff --git a/drivers/mci/mmci.c b/drivers/mci/mmci.c +index 7489ee03a13c..f45557d4f7be 100644 +--- a/drivers/mci/mmci.c ++++ b/drivers/mci/mmci.c +@@ -532,9 +532,37 @@ static void mci_set_ios(struct mci_host *mci, struct mci_ios *ios) + udelay(CLK_CHANGE_DELAY); + } + ++static int mmci_of_parse(struct device_node *np, ++ struct mmci_platform_data *plat) ++{ ++ if (!IS_ENABLED(CONFIG_OFDEVICE)) ++ return 0; ++ ++ if (of_get_property(np, "st,sig-dir-dat0", NULL)) ++ plat->sigdir |= MCI_ST_DATA0DIREN; ++ if (of_get_property(np, "st,sig-dir-dat2", NULL)) ++ plat->sigdir |= MCI_ST_DATA2DIREN; ++ if (of_get_property(np, "st,sig-dir-dat31", NULL)) ++ plat->sigdir |= MCI_ST_DATA31DIREN; ++ if (of_get_property(np, "st,sig-dir-dat74", NULL)) ++ plat->sigdir |= MCI_ST_DATA74DIREN; ++ if (of_get_property(np, "st,sig-dir-cmd", NULL)) ++ plat->sigdir |= MCI_ST_CMDDIREN; ++ if (of_get_property(np, "st,sig-pin-fbclk", NULL)) ++ plat->sigdir |= MCI_ST_FBCLKEN; ++ ++ if (of_get_property(np, "mmc-cap-mmc-highspeed", NULL)) ++ plat->capabilities |= MMC_CAP_MMC_HIGHSPEED; ++ if (of_get_property(np, "mmc-cap-sd-highspeed", NULL)) ++ plat->capabilities |= MMC_CAP_SD_HIGHSPEED; ++ ++ return 0; ++} ++ + static int mmci_probe(struct amba_device *dev, const struct amba_id *id) + { + struct device_d *hw_dev = &dev->dev; ++ struct device_node *np = hw_dev->device_node; + struct mmci_platform_data *plat = hw_dev->platform_data; + struct variant_data *variant = id->data; + u32 sdi_u32; +@@ -542,11 +570,16 @@ static int mmci_probe(struct amba_device *dev, const struct amba_id *id) + struct clk *clk; + int ret; + +- if (!plat) { +- dev_err(hw_dev, "missing platform data\n"); ++ if (!plat && !np) { ++ dev_err(hw_dev, "missing platform data or DT node\n"); + return -EINVAL; + } + ++ if (!plat) ++ plat = xzalloc(sizeof(*plat)); ++ ++ mmci_of_parse(np, plat); ++ + host = xzalloc(sizeof(*host)); + + host->base = amba_get_mem_region(dev); +@@ -625,7 +658,7 @@ static int mmci_probe(struct amba_device *dev, const struct amba_id *id) + host->mci.max_req_size = (1 << variant->datalength_bits) - 1; + + host->mci.host_caps = plat->capabilities; +- host->mci.voltages = plat->ocr_mask; ++ host->mci.voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | plat->ocr_mask; + + mci_register(&host->mci); + |