SDIO is not supported in u-boot, there is no point in enabling mmc3.
Signed-off-by: Jean-Jacques Hiblot jjhiblot@ti.com ---
Tom,
this will fix the problem youreported with commit b5511d6cb8dc601efc14b8cf60755 on am335x-evm. For the record, the problem is that the clock of mmc 3 is not enbled by the arch code. With DM_MMC enabled, mmc3 gets probed and u-boot crashes when mmc3's registers are accessed for the first time.
Jean-Jacques
arch/arm/dts/am335x-evm.dts | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/arm/dts/am335x-evm.dts b/arch/arm/dts/am335x-evm.dts index a6f20af..e94fcad 100644 --- a/arch/arm/dts/am335x-evm.dts +++ b/arch/arm/dts/am335x-evm.dts @@ -721,12 +721,14 @@ };
&mmc3 { + /* disable MMC3 as SDIO is not supported in U-Boot */ + status = "disabled"; + /* these are on the crossbar and are outlined in the xbar-event-map element */ dmas = <&edma 12 &edma 13>; dma-names = "tx", "rx"; - status = "okay"; vmmc-supply = <&wlan_en_reg>; bus-width = <4>; pinctrl-names = "default";