From: Gwenhael Goavec-Merou <gwenhael.goavec-me...@trabucayre.com> As mentionned in [1] MMC sometime fails to be initialized/ is not working with this type of error:
arasan-sdhci e0100000....@e0100000.of: registered as mmc0 malloc space: 0x17e00000 -> 0x1fdfffff (size 128 MiB) arasan-sdhci e0100000....@e0100000.of: error while transferring data for command 6 arasan-sdhci e0100000....@e0100000.of: state = 0x01ff0202 , interrupt = 0x00208000 mmc0: Card's startup fails with -74 barebox-environment chosen:environment-sd.of: probe failed: No such file or directory environment load /dev/env0: No such file or directory This patch adds SDIO clck configuration allowing to have a valid MMC clock frequency. [1] https://lore.barebox.org/barebox/vi1pr02mb4429606e3b06d0f53d2b4175ab...@vi1pr02mb4429.eurprd02.prod.outlook.com/T/#m1cb8598da4741c0b7a41944e1aecef373dd74319 Signed-off-by: Gwenhael Goavec-Merou <gwenhael.goavec-me...@trabucayre.com> --- arch/arm/boards/avnet-zedboard/lowlevel.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boards/avnet-zedboard/lowlevel.c b/arch/arm/boards/avnet-zedboard/lowlevel.c index 605aab783a..b7a98f5a82 100644 --- a/arch/arm/boards/avnet-zedboard/lowlevel.c +++ b/arch/arm/boards/avnet-zedboard/lowlevel.c @@ -241,6 +241,7 @@ static void avnet_zedboard_ps7_init(void) /* poor mans clkctrl */ writel(0x00001403, ZYNQ_CLOCK_CTRL_BASE + ZYNQ_UART_CLK_CTRL); writel(0x00000101, ZYNQ_CLOCK_CTRL_BASE + ZYNQ_LQSPI_CLK_CTRL); + writel(0x00001401, ZYNQ_CLOCK_CTRL_BASE + ZYNQ_SDIO_CLK_CTRL); /* GEM0 */ writel(0x00000001, 0xf8000138); -- 2.47.2
