From 8ae1f8298820a19380bafc07ad554bd629cc27be Mon Sep 17 00:00:00 2001 From: Jonathan Gray Date: Sat, 17 Mar 2018 16:15:48 +1100 Subject: mmc: use core clock frequency in bcm2835 sdhost In raspberrypi-firmware 7fdcd00e00a42a1c91e8bd6f5eb8352fe9358557 and later start.elf now sets the EMMC clock to 200 MHz. According to Phil Elwell in https://github.com/raspberrypi/firmware/issues/953 the SDHost controller shares the core/VPU clock and doesn't use the EMMC clock. Use the core clock id when determining the frequency to allow U-Boot to work with recent versions of raspberrypi-firmware. Otherwise U-Boot hangs at: U-Boot 2018.03 (Mar 14 2018 - 20:36:00 +1100) DRAM: 948 MiB RPI 3 Model B (0xa02082) MMC: mmc@7e202000: 0, sdhci@7e300000: 1 Loading Environment from FAT... Signed-off-by: Jonathan Gray Signed-off-by: Alexander Graf --- drivers/mmc/bcm2835_sdhci.c | 2 +- drivers/mmc/bcm2835_sdhost.c | 3 ++- 2 files changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/mmc/bcm2835_sdhci.c b/drivers/mmc/bcm2835_sdhci.c index 3157354..08bddd4 100644 --- a/drivers/mmc/bcm2835_sdhci.c +++ b/drivers/mmc/bcm2835_sdhci.c @@ -183,7 +183,7 @@ static int bcm2835_sdhci_probe(struct udevice *dev) if (base == FDT_ADDR_T_NONE) return -EINVAL; - ret = bcm2835_get_mmc_clock(); + ret = bcm2835_get_mmc_clock(BCM2835_MBOX_CLOCK_ID_EMMC); if (ret < 0) { debug("%s: Failed to set MMC clock (err=%d)\n", __func__, ret); return ret; diff --git a/drivers/mmc/bcm2835_sdhost.c b/drivers/mmc/bcm2835_sdhost.c index 1bf52a3..bccd182 100644 --- a/drivers/mmc/bcm2835_sdhost.c +++ b/drivers/mmc/bcm2835_sdhost.c @@ -35,6 +35,7 @@ #include #include #include +#include #include #include #include @@ -941,7 +942,7 @@ static int bcm2835_probe(struct udevice *dev) if (!host->ioaddr) return -ENOMEM; - host->max_clk = bcm2835_get_mmc_clock(); + host->max_clk = bcm2835_get_mmc_clock(BCM2835_MBOX_CLOCK_ID_CORE); bcm2835_add_host(host); -- cgit v1.1