Since there is no OF support in the xloader on socfpga it uses the platform_data system. There needs to be a way to supply the equivalent of the DT property bus-width this way to support devices that need to use a smaller bus.
So that we don't need to put every flag that might get added to the MMC_CAP list into platform_data, just put the bus width ones into platform_data. The socfpga dts sources specify a bus-width of 4 so use that in the platform_data for socfpga. Signed-off-by: Trent Piepho <[email protected]> --- arch/arm/mach-socfpga/xload.c | 2 ++ drivers/mci/dw_mmc.c | 24 +++++++++++++----------- include/platform_data/dw_mmc.h | 1 + 3 files changed, 16 insertions(+), 11 deletions(-) diff --git a/arch/arm/mach-socfpga/xload.c b/arch/arm/mach-socfpga/xload.c index 272896b..cf05ff3 100644 --- a/arch/arm/mach-socfpga/xload.c +++ b/arch/arm/mach-socfpga/xload.c @@ -10,6 +10,7 @@ #include <linux/sizes.h> #include <fs.h> #include <io.h> +#include <mci.h> #include <linux/clkdev.h> #include <linux/stat.h> @@ -33,6 +34,7 @@ enum socfpga_clks { static struct clk *clks[clk_max]; static struct dw_mmc_platform_data mmc_pdata = { + .bus_width_caps = MMC_CAP_4_BIT_DATA, .ciu_div = 3, }; diff --git a/drivers/mci/dw_mmc.c b/drivers/mci/dw_mmc.c index acdf795..f8ff389 100644 --- a/drivers/mci/dw_mmc.c +++ b/drivers/mci/dw_mmc.c @@ -698,9 +698,22 @@ static int dw_mmc_probe(struct device_d *dev) if (IS_ERR(host->ioaddr)) return PTR_ERR(host->ioaddr); + host->idmac = dma_alloc_coherent(sizeof(*host->idmac) * DW_MMC_NUM_IDMACS, + DMA_ADDRESS_BROKEN); + + host->mci.send_cmd = dwmci_cmd; + host->mci.set_ios = dwmci_set_ios; + host->mci.init = dwmci_init; + host->mci.card_present = dwmci_card_present; + host->mci.hw_dev = dev; + host->mci.voltages = MMC_VDD_32_33 | MMC_VDD_33_34; + host->mci.host_caps = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA; + if (pdata) { mci->devname = pdata->devname; host->ciu_div = pdata->ciu_div; + host->mci.host_caps &= ~MMC_CAP_BIT_DATA_MASK; + host->mci.host_caps |= pdata->bus_width_caps; } else if (dev->device_node) { const char *alias = of_alias_get(dev->device_node); if (alias) @@ -712,17 +725,6 @@ static int dw_mmc_probe(struct device_d *dev) /* divider is 0 based in pdata and 1 based in our private struct */ host->ciu_div++; - host->idmac = dma_alloc_coherent(sizeof(*host->idmac) * DW_MMC_NUM_IDMACS, - DMA_ADDRESS_BROKEN); - - host->mci.send_cmd = dwmci_cmd; - host->mci.set_ios = dwmci_set_ios; - host->mci.init = dwmci_init; - host->mci.card_present = dwmci_card_present; - host->mci.hw_dev = dev; - host->mci.voltages = MMC_VDD_32_33 | MMC_VDD_33_34; - host->mci.host_caps = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA; - if (of_device_is_compatible(dev->device_node, "rockchip,rk2928-dw-mshc")) host->pwren_value = 0; diff --git a/include/platform_data/dw_mmc.h b/include/platform_data/dw_mmc.h index 48faa76..ce1b339 100644 --- a/include/platform_data/dw_mmc.h +++ b/include/platform_data/dw_mmc.h @@ -3,6 +3,7 @@ struct dw_mmc_platform_data { char *devname; + unsigned int bus_width_caps; int ciu_div; }; -- 1.8.3.1 _______________________________________________ barebox mailing list [email protected] http://lists.infradead.org/mailman/listinfo/barebox
