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f5919b65d4
Patch generation process: - rebase rpi/rpi-4.14.y on v4.14.89 from linux-stable - git format-patch v4.14.89 Patches skipped during rebase: - lan78xx: Read MAC address from DT if present - lan78xx: Enable LEDs and auto-negotiation - Revert "softirq: Let ksoftirqd do its job" - sc16is7xx: Fix for multi-channel stall - lan78xx: Ignore DT MAC address if already valid - lan78xx: Simple patch to prevent some crashes - tcp_write_queue_purge clears all the SKBs in the write queue - Revert "lan78xx: Simple patch to prevent some crashes" - lan78xx: Connect phy early - Arm: mm: ftrace: Only set text back to ro after kernel has been marked ro - Revert "Revert "softirq: Let ksoftirqd do its job"" - ASoC: cs4265: SOC_SINGLE register value error fix - Revert "ASoC: cs4265: SOC_SINGLE register value error fix" - Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends" - Revert "Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends"" Patches dropped after rebase: - net: Add non-mainline source for rtl8192cu wlan - net: Fix rtl8192cu build errors on other platforms - brcm: adds support for BCM43341 wifi - brcmfmac: Mute expected startup 'errors' - ARM64: Fix build break for RTL8187/RTL8192CU wifi - ARM64: Enable RTL8187/RTL8192CU wifi in build config - This is the driver for Sony CXD2880 DVB-T2/T tuner + demodulator - brcmfmac: add CLM download support - brcmfmac: request_firmware_direct is quieter - Sets the BCDC priority to constant 0 - brcmfmac: Disable ARP offloading when promiscuous - brcmfmac: Avoid possible out-of-bounds read - brcmfmac: Delete redundant length check - net: rtl8192cu: Normalize indentation - net: rtl8192cu: Fix implicit fallthrough warnings - Revert "Sets the BCDC priority to constant 0" - media: cxd2880: Bump to match 4.18.y version - media: cxd2880-spi: Bump to match 4.18.y version - Revert "mm: alloc_contig: re-allow CMA to compact FS pages" - Revert "Revert "mm: alloc_contig: re-allow CMA to compact FS pages"" - cxd2880: CXD2880_SPI_DRV should select DVB_CXD2880 with MEDIA_SUBDRV_AUTOSELECT - 950-0421-HID-hid-bigbenff-driver-for-BigBen-Interactive-PS3OF.patch - 950-0453-Add-hid-bigbenff-to-list-of-have_special_driver-for-.patch Make I2C built-in instead of modular as in upstream defconfig; also the easiest way to get MFD_ARIZONA enabled, which is required by kmod-sound-soc-rpi-cirrus. Add missing compatible strings from 4.9/960-add-rasbperrypi-compatible.patch, using upstream names for compute modules. Add extra patch to enable the LEDs on lan78xx. Compile-tested: bcm2708, bcm2709, bcm2710 (with CONFIG_ALL_KMODS=y) Runtime-tested: bcm2708, bcm2710 Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
106 lines
3.4 KiB
Diff
106 lines
3.4 KiB
Diff
From d1f9b37d299ef8cbd740a3f6cb7f71db887737d6 Mon Sep 17 00:00:00 2001
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From: Jasper Boomer <jasperboomer@gmail.com>
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Date: Sun, 24 Jun 2018 12:20:27 -0400
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Subject: [PATCH 339/454] Add device tree overlay for HD44780
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---
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arch/arm/boot/dts/overlays/Makefile | 1 +
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arch/arm/boot/dts/overlays/README | 25 ++++++++++
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.../boot/dts/overlays/hd44780-lcd-overlay.dts | 46 +++++++++++++++++++
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3 files changed, 72 insertions(+)
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create mode 100644 arch/arm/boot/dts/overlays/hd44780-lcd-overlay.dts
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--- a/arch/arm/boot/dts/overlays/Makefile
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+++ b/arch/arm/boot/dts/overlays/Makefile
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@@ -38,6 +38,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
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gpio-no-irq.dtbo \
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gpio-poweroff.dtbo \
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gpio-shutdown.dtbo \
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+ hd44780-lcd.dtbo \
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hifiberry-amp.dtbo \
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hifiberry-dac.dtbo \
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hifiberry-dacplus.dtbo \
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -639,6 +639,31 @@ Params: gpio_pin GPIO pin
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external pullup.
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+Name: hd44780-lcd
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+Info: Configures an HD44780 compatible LCD display. Uses 4 gpio pins for
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+ data, 2 gpio pins for enable and register select and 1 optional pin
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+ for enabling/disabling the backlight display.
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+Load: dtoverlay=hd44780-lcd,<param>=<val>
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+Params: pin_d4 GPIO pin for data pin D4 (default 6)
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+
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+ pin_d5 GPIO pin for data pin D5 (default 13)
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+
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+ pin_d6 GPIO pin for data pin D6 (default 19)
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+
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+ pin_d7 GPIO pin for data pin D7 (default 26)
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+
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+ pin_en GPIO pin for "Enable" (default 21)
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+
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+ pin_rs GPIO pin for "Register Select" (default 20)
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+
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+ pin_bl Optional pin for enabling/disabling the
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+ display backlight. (default disabled)
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+
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+ display_height Height of the display in characters
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+
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+ display_width Width of the display in characters
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+
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+
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Name: hifiberry-amp
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Info: Configures the HifiBerry Amp and Amp+ audio cards
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Load: dtoverlay=hifiberry-amp
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/hd44780-lcd-overlay.dts
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@@ -0,0 +1,46 @@
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+/dts-v1/;
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+/plugin/;
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+
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+/ {
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+ compatible = "brcm,bcm2835";
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+
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+ fragment@0 {
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+ target-path = "/";
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+ __overlay__ {
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+ lcd_screen: auxdisplay {
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+ compatible = "hit,hd44780";
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+
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+ data-gpios = <&gpio 6 0>,
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+ <&gpio 13 0>,
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+ <&gpio 19 0>,
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+ <&gpio 26 0>;
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+ enable-gpios = <&gpio 21 0>;
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+ rs-gpios = <&gpio 20 0>;
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+
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+ display-height-chars = <2>;
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+ display-width-chars = <16>;
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+ };
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+
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+ };
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+ };
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+
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+ fragment@1 {
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+ target = <&lcd_screen>;
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+ __dormant__ {
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+ backlight-gpios = <&gpio 12 0>;
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+ };
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+ };
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+
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+ __overrides__ {
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+ pin_d4 = <&lcd_screen>,"data-gpios:4";
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+ pin_d5 = <&lcd_screen>,"data-gpios:16";
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+ pin_d6 = <&lcd_screen>,"data-gpios:28";
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+ pin_d7 = <&lcd_screen>,"data-gpios:40";
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+ pin_en = <&lcd_screen>,"enable-gpios:4";
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+ pin_rs = <&lcd_screen>,"rs-gpios:4";
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+ pin_bl = <0>,"+1", <&lcd_screen>,"backlight-gpios:4";
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+ display_height = <&lcd_screen>,"display-height-chars:0";
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+ display_width = <&lcd_screen>,"display-width-chars:0";
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+ };
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+
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+};
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