diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0125-SDIO-overlay-add-bus_width-parameter.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0125-SDIO-overlay-add-bus_width-parameter.patch | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0125-SDIO-overlay-add-bus_width-parameter.patch b/target/linux/brcm2708/patches-4.4/0125-SDIO-overlay-add-bus_width-parameter.patch new file mode 100644 index 0000000000..c16a0027d5 --- /dev/null +++ b/target/linux/brcm2708/patches-4.4/0125-SDIO-overlay-add-bus_width-parameter.patch @@ -0,0 +1,42 @@ +From c671b8fada8fe75583e25cd93f9a414c7024e613 Mon Sep 17 00:00:00 2001 +From: Andrew Litt <ajlitt@splunge.net> +Date: Mon, 11 Jan 2016 07:55:54 +0000 +Subject: [PATCH 125/232] SDIO-overlay: add bus_width parameter + +Allow setting of the SDIO bus width capability of the bcm2835-mmc +host. This is helpful when only a 1 bit wide bus is connected +between host and device but both host and device advertise 4 bit +mode. +--- + arch/arm/boot/dts/overlays/README | 2 ++ + arch/arm/boot/dts/overlays/sdio-overlay.dts | 2 ++ + 2 files changed, 4 insertions(+) + +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -634,6 +634,8 @@ Params: overclock_50 Clock ( + poll_once Disable SDIO-device polling every second + (default on: polling once at boot-time) + ++ bus_width Set the SDIO host bus width (default 4 bits) ++ + + Name: sdtweak + Info: Tunes the bcm2835-sdhost SD/MMC driver +--- a/arch/arm/boot/dts/overlays/sdio-overlay.dts ++++ b/arch/arm/boot/dts/overlays/sdio-overlay.dts +@@ -11,6 +11,7 @@ + pinctrl-names = "default"; + pinctrl-0 = <&sdio_pins>; + non-removable; ++ bus-width = <4>; + status = "okay"; + }; + }; +@@ -28,5 +29,6 @@ + + __overrides__ { + poll_once = <&sdio_mmc>,"non-removable?"; ++ bus_width = <&sdio_mmc>,"bus-width:0"; + }; + }; |