From b80428cf646d37e5b84103807a7259f8dccfe4d0 Mon Sep 17 00:00:00 2001 From: Phil Elwell Date: Wed, 30 Mar 2016 17:07:15 +0100 Subject: [PATCH] BCM270X_DT: Document hazards of sdhost overlay Signed-off-by: Phil Elwell --- arch/arm/boot/dts/overlays/README | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) --- a/arch/arm/boot/dts/overlays/README +++ b/arch/arm/boot/dts/overlays/README @@ -712,7 +712,11 @@ Params: Name: sdhost -Info: Selects the bcm2835-sdhost SD/MMC driver, optionally with overclock +Info: Selects the bcm2835-sdhost SD/MMC driver, optionally with overclock. + N.B. This overlay is designed for situations where the mmc driver is + the default, so it disables the other (mmc) interface - this will kill + WiFi on a Pi3. If this isn't what you want, either use the sdtweak + overlay or the new sd_* dtparams of the base DTBs. Load: dtoverlay=sdhost,= Params: overclock_50 Clock (in MHz) to use when the MMC framework requests 50MHz @@ -771,6 +775,8 @@ Params: overclock_50 SD Clock Name: sdtweak Info: Tunes the bcm2835-sdhost SD/MMC driver + N.B. This functionality is now available via the sd_* dtparams in the + base DTB. Load: dtoverlay=sdtweak,= Params: overclock_50 Clock (in MHz) to use when the MMC framework requests 50MHz