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freifunkist-firmware/target/linux/brcm2708/patches-4.14/950-0289-overlays-Add-ltc29...

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brcm2708: add kernel 4.14 support 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>
6 years ago
From 585ea300fa44cdf3c3259af68c49518bb85e4af2 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Tue, 1 May 2018 09:35:56 +0100
Subject: [PATCH 289/454] overlays: Add ltc294x (battery gauge)
Support the LTC294x range of I2C-connected battery monitors.
See: https://github.com/raspberrypi/linux/issues/2537
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
arch/arm/boot/dts/overlays/Makefile | 1 +
arch/arm/boot/dts/overlays/README | 25 ++++++
.../arm/boot/dts/overlays/ltc294x-overlay.dts | 86 +++++++++++++++++++
3 files changed, 112 insertions(+)
create mode 100644 arch/arm/boot/dts/overlays/ltc294x-overlay.dts
--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -60,6 +60,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
justboom-dac.dtbo \
justboom-digi.dtbo \
lirc-rpi.dtbo \
+ ltc294x.dtbo \
mbed-dac.dtbo \
mcp23017.dtbo \
mcp23s17.dtbo \
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -1020,6 +1020,31 @@ Params: gpio_out_pin GPIO for
(default "off")
+Name: ltc294x
+Info: Adds support for the ltc294x family of battery gauges
+Load: dtoverlay=ltc294x,<param>=<val>
+Params: ltc2941 Select the ltc2941 device
+
+ ltc2942 Select the ltc2942 device
+
+ ltc2943 Select the ltc2943 device
+
+ ltc2944 Select the ltc2944 device
+
+ resistor-sense The sense resistor value in milli-ohms.
+ Can be a 32-bit negative value when the battery
+ has been connected to the wrong end of the
+ resistor.
+
+ prescaler-exponent Range and accuracy of the gauge. The value is
+ programmed into the chip only if it differs
+ from the current setting.
+ For LTC2941 only:
+ - Default value is 128
+ - the exponent is in the range 0-7 (default 7)
+ See the datasheet for more information.
+
+
Name: mbed-dac
Info: Configures the mbed AudioCODEC (TLV320AIC23B)
Load: dtoverlay=mbed-dac
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/ltc294x-overlay.dts
@@ -0,0 +1,86 @@
+/dts-v1/;
+/plugin/;
+
+
+/ {
+ compatible = "brcm,bcm2835";
+
+ fragment@0 {
+ target = <&i2c_arm>;
+ __dormant__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ ltc2941: ltc2941@64 {
+ compatible = "lltc,ltc2941";
+ reg = <0x64>;
+ lltc,resistor-sense = <50>;
+ lltc,prescaler-exponent = <7>;
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&i2c_arm>;
+ __dormant__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ ltc2942: ltc2942@64 {
+ compatible = "lltc,ltc2942";
+ reg = <0x64>;
+ lltc,resistor-sense = <50>;
+ lltc,prescaler-exponent = <7>;
+ };
+ };
+ };
+
+ fragment@2 {
+ target = <&i2c_arm>;
+ __dormant__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ ltc2943: ltc2943@64 {
+ compatible = "lltc,ltc2943";
+ reg = <0x64>;
+ lltc,resistor-sense = <50>;
+ lltc,prescaler-exponent = <7>;
+ };
+ };
+ };
+
+ fragment@3 {
+ target = <&i2c_arm>;
+ __dormant__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ ltc2944: ltc2944@64 {
+ compatible = "lltc,ltc2944";
+ reg = <0x64>;
+ lltc,resistor-sense = <50>;
+ lltc,prescaler-exponent = <7>;
+ };
+ };
+ };
+
+ __overrides__ {
+ ltc2941 = <0>,"+0";
+ ltc2942 = <0>,"+1";
+ ltc2943 = <0>,"+2";
+ ltc2944 = <0>,"+3";
+ resistor-sense = <&ltc2941>, "lltc,resistor-sense:0",
+ <&ltc2942>, "lltc,resistor-sense:0",
+ <&ltc2943>, "lltc,resistor-sense:0",
+ <&ltc2944>, "lltc,resistor-sense:0";
+ prescaler-exponent = <&ltc2941>, "lltc,prescaler-exponent:0",
+ <&ltc2942>, "lltc,prescaler-exponent:0",
+ <&ltc2943>, "lltc,prescaler-exponent:0",
+ <&ltc2944>, "lltc,prescaler-exponent:0";
+ };
+};