brcm2708: add linux 4.19 support

Boot tested on Raspberry Pi B+ (BCM2708) and Raspberry Pi 2 (BCM2709)

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 107 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.19/950-0306-overlays-sdio-Add-enhanced-1-bit-support.patch b/target/linux/brcm2708/patches-4.19/950-0306-overlays-sdio-Add-enhanced-1-bit-support.patch
new file mode 100644
index 0000000000..9a95c58740
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0306-overlays-sdio-Add-enhanced-1-bit-support.patch
@@ -0,0 +1,107 @@
+From 510aeba93fa3dde1e2890d49409bd1be2d72f3fe Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Thu, 10 Jan 2019 15:27:56 +0000
+Subject: [PATCH 306/703] overlays: sdio: Add enhanced 1-bit support
+
+"dtoverlay=sdio,bus_width=1,gpios_22_25" is equivalent to the sdio-1bit
+overlay, which is now deprecated.
+
+"dtoverlay=sdio,bus_width=1,gpios_34_37" enables 1-bit mode on GPIOs 34-37.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ arch/arm/boot/dts/overlays/README           | 24 +++++++++++----------
+ arch/arm/boot/dts/overlays/sdio-overlay.dts | 20 ++++++++++++++++-
+ 2 files changed, 32 insertions(+), 12 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -479,8 +479,7 @@ Params: <None>
+ 
+ Name:   bmp085_i2c-sensor
+ Info:   This overlay is now deprecated - see i2c-sensor
+-Load:   dtoverlay=bmp085_i2c-sensor
+-Params: <None>
++Load:   <Deprecated>
+ 
+ 
+ Name:   dht11
+@@ -1737,7 +1736,8 @@ Params: overclock_50            Clock (i
+ 
+ Name:   sdio
+ Info:   Selects the bcm2835-sdhost SD/MMC driver, optionally with overclock,
+-        and enables SDIO via GPIOs 22-27.
++        and enables SDIO via GPIOs 22-27. An example of use in 1-bit mode is
++        "dtoverlay=sdio,bus_width=1,gpios_22_25"
+ Load:   dtoverlay=sdio,<param>=<val>
+ Params: sdio_overclock          SDIO Clock (in MHz) to use when the MMC
+                                 framework requests 50MHz
+@@ -1747,16 +1747,18 @@ Params: sdio_overclock          SDIO Clo
+ 
+         bus_width               Set the SDIO host bus width (default 4 bits)
+ 
++        gpios_22_25             Select GPIOs 22-25 for 1-bit mode. Must be used
++                                with bus_width=1. This replaces the sdio-1bit
++                                overlay, which is now deprecated.
+ 
+-Name:   sdio-1bit
+-Info:   Selects the bcm2835-sdhost SD/MMC driver, optionally with overclock,
+-        and enables 1-bit SDIO via GPIOs 22-25.
+-Load:   dtoverlay=sdio-1bit,<param>=<val>
+-Params: sdio_overclock          SDIO Clock (in MHz) to use when the MMC
+-                                framework requests 50MHz
++        gpios_34_37             Select GPIOs 34-37 for 1-bit mode. Must be used
++                                with bus_width=1.
+ 
+-        poll_once               Disable SDIO-device polling every second
+-                                (default on: polling once at boot-time)
++
++Name:   sdio-1bit
++Info:   This overlay is now deprecated. Use
++        "dtoverlay=sdio,bus_width=1,gpios_22_25" instead.
++Load:   <Deprecated>
+ 
+ 
+ Name:   sdtweak
+--- a/arch/arm/boot/dts/overlays/sdio-overlay.dts
++++ b/arch/arm/boot/dts/overlays/sdio-overlay.dts
+@@ -32,7 +32,7 @@
+ 				pinctrl-names = "default";
+ 				pinctrl-0 = <&sdio_ovl_pins>;
+ 				non-removable;
+-				bus-width = <1>;
++				bus-width = <4>;
+ 			};
+ 		};
+ 	};
+@@ -49,6 +49,22 @@
+ 	};
+ 
+ 	fragment@3 {
++		target = <&sdio_ovl_pins>;
++		__dormant__ {
++			brcm,pins = <22 23 24 25>;
++			brcm,pull = <0 2 2 2>;
++		};
++	};
++
++	fragment@4 {
++		target = <&sdio_ovl_pins>;
++		__dormant__ {
++			brcm,pins = <34 35 36 37>;
++			brcm,pull = <0 2 2 2>;
++		};
++	};
++
++	fragment@6 {
+ 		target-path = "/aliases";
+ 		__overlay__ {
+ 			mmc1 = "/soc/sdio@7e300000";
+@@ -59,5 +75,7 @@
+ 		poll_once = <&sdio_ovl>,"non-removable?";
+ 		bus_width = <&sdio_ovl>,"bus-width:0";
+ 		sdio_overclock = <&sdio_ovl>,"brcm,overclock-50:0";
++		gpios_22_25 = <0>,"=3";
++		gpios_34_37 = <0>,"=4";
+ 	};
+ };