Add explicit flushing to prevent the 50MHz fallback. Signed-off-by: Andre Heider <[email protected]> --- drivers/mci/mci-bcm2835.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/mci/mci-bcm2835.c b/drivers/mci/mci-bcm2835.c index a0c364d..2ffdeec 100644 --- a/drivers/mci/mci-bcm2835.c +++ b/drivers/mci/mci-bcm2835.c @@ -28,6 +28,7 @@ * Author: Wilhelm Lundgren <[email protected]> */ +#include <asm/mmu.h> #include <common.h> #include <init.h> #include <mci.h> @@ -471,7 +472,7 @@ int bcm2835_mci_reset(struct mci_host *mci, struct device_d *mci_dev) static u32 bcm2835_mci_get_emmc_clock(struct msg_get_clock_rate *clk_data) { u32 val; - struct bcm2835_mbox_regs *regs = + struct bcm2835_mbox_regs __iomem *regs = (struct bcm2835_mbox_regs *) BCM2835_MBOX_PHYSADDR; /*Read out old msg*/ @@ -489,6 +490,7 @@ static u32 bcm2835_mci_get_emmc_clock(struct msg_get_clock_rate *clk_data) break; } val = BCM2835_MBOX_PROP_CHAN + ((u32) &clk_data->hdr); + dma_flush_range((u32)clk_data, (u32)clk_data + sizeof(*clk_data)); writel(val, ®s->write); while (true) { @@ -504,6 +506,9 @@ static u32 bcm2835_mci_get_emmc_clock(struct msg_get_clock_rate *clk_data) if ((val & 0x0F) == BCM2835_MBOX_PROP_CHAN) break; } + + dma_inv_range((u32)clk_data, (u32)clk_data + sizeof(*clk_data)); + if ((val & ~0x0F) == ((u32) &clk_data->hdr)) if (clk_data->get_clock_rate.tag_hdr.val_len & BCM2835_MBOX_TAG_VAL_LEN_RESPONSE) -- 1.8.3.2 _______________________________________________ barebox mailing list [email protected] http://lists.infradead.org/mailman/listinfo/barebox
