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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>
151 lines
4.1 KiB
Diff
151 lines
4.1 KiB
Diff
From 585ea300fa44cdf3c3259af68c49518bb85e4af2 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Tue, 1 May 2018 09:35:56 +0100
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Subject: [PATCH 289/454] overlays: Add ltc294x (battery gauge)
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Support the LTC294x range of I2C-connected battery monitors.
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See: https://github.com/raspberrypi/linux/issues/2537
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Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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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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.../arm/boot/dts/overlays/ltc294x-overlay.dts | 86 +++++++++++++++++++
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3 files changed, 112 insertions(+)
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create mode 100644 arch/arm/boot/dts/overlays/ltc294x-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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@@ -60,6 +60,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
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justboom-dac.dtbo \
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justboom-digi.dtbo \
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lirc-rpi.dtbo \
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+ ltc294x.dtbo \
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mbed-dac.dtbo \
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mcp23017.dtbo \
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mcp23s17.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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@@ -1020,6 +1020,31 @@ Params: gpio_out_pin GPIO for
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(default "off")
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+Name: ltc294x
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+Info: Adds support for the ltc294x family of battery gauges
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+Load: dtoverlay=ltc294x,<param>=<val>
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+Params: ltc2941 Select the ltc2941 device
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+
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+ ltc2942 Select the ltc2942 device
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+
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+ ltc2943 Select the ltc2943 device
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+
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+ ltc2944 Select the ltc2944 device
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+
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+ resistor-sense The sense resistor value in milli-ohms.
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+ Can be a 32-bit negative value when the battery
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+ has been connected to the wrong end of the
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+ resistor.
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+
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+ prescaler-exponent Range and accuracy of the gauge. The value is
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+ programmed into the chip only if it differs
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+ from the current setting.
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+ For LTC2941 only:
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+ - Default value is 128
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+ - the exponent is in the range 0-7 (default 7)
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+ See the datasheet for more information.
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+
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+
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Name: mbed-dac
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Info: Configures the mbed AudioCODEC (TLV320AIC23B)
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Load: dtoverlay=mbed-dac
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/ltc294x-overlay.dts
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@@ -0,0 +1,86 @@
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+/dts-v1/;
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+/plugin/;
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+
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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 = <&i2c_arm>;
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+ __dormant__ {
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ status = "okay";
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+
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+ ltc2941: ltc2941@64 {
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+ compatible = "lltc,ltc2941";
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+ reg = <0x64>;
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+ lltc,resistor-sense = <50>;
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+ lltc,prescaler-exponent = <7>;
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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 = <&i2c_arm>;
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+ __dormant__ {
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ status = "okay";
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+
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+ ltc2942: ltc2942@64 {
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+ compatible = "lltc,ltc2942";
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+ reg = <0x64>;
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+ lltc,resistor-sense = <50>;
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+ lltc,prescaler-exponent = <7>;
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+ };
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+ };
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+ };
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+
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+ fragment@2 {
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+ target = <&i2c_arm>;
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+ __dormant__ {
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ status = "okay";
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+
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+ ltc2943: ltc2943@64 {
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+ compatible = "lltc,ltc2943";
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+ reg = <0x64>;
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+ lltc,resistor-sense = <50>;
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+ lltc,prescaler-exponent = <7>;
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+ };
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+ };
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+ };
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+
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+ fragment@3 {
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+ target = <&i2c_arm>;
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+ __dormant__ {
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ status = "okay";
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+
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+ ltc2944: ltc2944@64 {
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+ compatible = "lltc,ltc2944";
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+ reg = <0x64>;
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+ lltc,resistor-sense = <50>;
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+ lltc,prescaler-exponent = <7>;
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+ };
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+ };
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+ };
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+
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+ __overrides__ {
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+ ltc2941 = <0>,"+0";
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+ ltc2942 = <0>,"+1";
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+ ltc2943 = <0>,"+2";
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+ ltc2944 = <0>,"+3";
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+ resistor-sense = <<c2941>, "lltc,resistor-sense:0",
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+ <<c2942>, "lltc,resistor-sense:0",
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+ <<c2943>, "lltc,resistor-sense:0",
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+ <<c2944>, "lltc,resistor-sense:0";
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+ prescaler-exponent = <<c2941>, "lltc,prescaler-exponent:0",
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+ <<c2942>, "lltc,prescaler-exponent:0",
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+ <<c2943>, "lltc,prescaler-exponent:0",
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+ <<c2944>, "lltc,prescaler-exponent:0";
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+ };
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+};
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