target/linux/brcm2708/patches-4.4/0218-BCM270X_DT-Document-hazards-of-sdhost-overlay.patch

   1 From 73f4b796019a7e9b7314851657aebd5f92f3ff75 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Wed, 30 Mar 2016 17:07:15 +0100
   4 Subject: [PATCH 218/232] BCM270X_DT: Document hazards of sdhost overlay
   5
   6 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
   7 ---
   8  arch/arm/boot/dts/overlays/README | 8 +++++++-
   9  1 file changed, 7 insertions(+), 1 deletion(-)
  10
  11 --- a/arch/arm/boot/dts/overlays/README
  12 +++ b/arch/arm/boot/dts/overlays/README
  13 @@ -712,7 +712,11 @@ Params: <None>
  14
  15
  16  Name:   sdhost
  17 -Info:   Selects the bcm2835-sdhost SD/MMC driver, optionally with overclock
  18 +Info:   Selects the bcm2835-sdhost SD/MMC driver, optionally with overclock.
  19 +        N.B. This overlay is designed for situations where the mmc driver is
  20 +        the default, so it disables the other (mmc) interface - this will kill
  21 +        WiFi on a Pi3. If this isn't what you want, either use the sdtweak
  22 +        overlay or the new sd_* dtparams of the base DTBs.
  23  Load:   dtoverlay=sdhost,<param>=<val>
  24  Params: overclock_50            Clock (in MHz) to use when the MMC framework
  25                                  requests 50MHz
  26 @@ -771,6 +775,8 @@ Params: overclock_50            SD Clock
  27
  28  Name:   sdtweak
  29  Info:   Tunes the bcm2835-sdhost SD/MMC driver
  30 +        N.B. This functionality is now available via the sd_* dtparams in the
  31 +        base DTB.
  32  Load:   dtoverlay=sdtweak,<param>=<val>
  33  Params: overclock_50            Clock (in MHz) to use when the MMC framework
  34                                  requests 50MHz