diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.1/0107-BCM270X_DT-Overlay-for-the-Fen-Logic-VGA666-board.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.1/0107-BCM270X_DT-Overlay-for-the-Fen-Logic-VGA666-board.patch | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.1/0107-BCM270X_DT-Overlay-for-the-Fen-Logic-VGA666-board.patch b/target/linux/brcm2708/patches-4.1/0107-BCM270X_DT-Overlay-for-the-Fen-Logic-VGA666-board.patch new file mode 100644 index 0000000..7be3abb --- /dev/null +++ b/target/linux/brcm2708/patches-4.1/0107-BCM270X_DT-Overlay-for-the-Fen-Logic-VGA666-board.patch @@ -0,0 +1,77 @@ +From bb7843be4cd8584ab8d3cfbd209220ccf2499327 Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Tue, 30 Jun 2015 09:10:36 +0100 +Subject: [PATCH 107/203] BCM270X_DT: Overlay for the Fen Logic VGA666 board + +The VGA666 board requires GPIOs 2-21 (so no I2C or UART). Using the +overlay (instead of a custom dt-blob.bin) has the advantage that it will +reserve those pins and stop other devices using them (except for GPIO), +but it does delay the point at which the output becomes valid until 2-3 +seconds after the kernel has started. +--- + arch/arm/boot/dts/overlays/Makefile | 1 + + arch/arm/boot/dts/overlays/README | 8 +++++++ + arch/arm/boot/dts/overlays/vga666-overlay.dts | 30 +++++++++++++++++++++++++++ + 3 files changed, 39 insertions(+) + create mode 100644 arch/arm/boot/dts/overlays/vga666-overlay.dts + +--- a/arch/arm/boot/dts/overlays/Makefile ++++ b/arch/arm/boot/dts/overlays/Makefile +@@ -43,6 +43,7 @@ dtb-$(RPI_DT_OVERLAYS) += spi-bcm2708-ov + dtb-$(RPI_DT_OVERLAYS) += spi-bcm2835-overlay.dtb + dtb-$(RPI_DT_OVERLAYS) += tinylcd35-overlay.dtb + dtb-$(RPI_DT_OVERLAYS) += uart1-overlay.dtb ++dtb-$(RPI_DT_OVERLAYS) += vga666-overlay.dtb + dtb-$(RPI_DT_OVERLAYS) += w1-gpio-overlay.dtb + dtb-$(RPI_DT_OVERLAYS) += w1-gpio-pullup-overlay.dtb + +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -497,6 +497,14 @@ Params: txd1_pin GPIO pi + rxd1_pin GPIO pin for RXD1 (15, 33 or 41 - default 15) + + ++Name: vga666 ++Info: Overlay for the Fen Logic VGA666 board ++ This uses GPIOs 2-21 (so no I2C), and activates the output 2-3 seconds ++ after the kernel has started. ++Load: dtoverlay=vga666 ++Params: <None> ++ ++ + Name: w1-gpio + Info: Configures the w1-gpio Onewire interface module. + Use this overlay if you *don't* need a GPIO to drive an external pullup. +--- /dev/null ++++ b/arch/arm/boot/dts/overlays/vga666-overlay.dts +@@ -0,0 +1,30 @@ ++/dts-v1/; ++/plugin/; ++ ++/{ ++ compatible = "brcm,bcm2708"; ++ ++ // There is no VGA driver module, but we need a platform device ++ // node (that doesn't already use pinctrl) to hang the pinctrl ++ // reference on - leds will do ++ ++ fragment@0 { ++ target = <&leds>; ++ __overlay__ { ++ pinctrl-names = "default"; ++ pinctrl-0 = <&vga666_pins>; ++ }; ++ }; ++ ++ fragment@1 { ++ target = <&gpio>; ++ __overlay__ { ++ vga666_pins: vga666_pins { ++ brcm,pins = <2 3 4 5 6 7 8 9 10 11 12 ++ 13 14 15 16 17 18 19 20 21>; ++ brcm,function = <6>; /* alt2 */ ++ brcm,pull = <0>; /* no pull */ ++ }; ++ }; ++ }; ++}; |