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d81c03f05e
These patches were generated from: https://github.com/raspberrypi/linux/commits/rpi-6.12.y With the following command: git format-patch -N v6.12.27..HEAD (HEAD -> 8d3206ee456a5ecdf9ddbfd8e5e231e4f0cd716e) Exceptions: - (def)configs patches - github workflows patches - applied & reverted patches - readme patches - wireless patches Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
53 lines
1.6 KiB
Diff
53 lines
1.6 KiB
Diff
From 1d238cba561b2cb180387b31d18850e9bdfdad8e Mon Sep 17 00:00:00 2001
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From: Josh Martinez <8892161+joshermar@users.noreply.github.com>
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Date: Sun, 20 Apr 2025 17:29:36 -0500
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Subject: [PATCH] hwmon: aht10: Fix AHT20 initialization
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The existing driver claims AHT20 support in i2c_device_id, but fails to:
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1. Use the correct init command (0xBE for AHT20 vs 0xE1 for AHT10)
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2. Omit AHT10_MODE_CYC which AHT20 doesn't support/require
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Add proper initialization sequence and include "aosong,aht20" in the
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device tree match table to fully support the AHT20.
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Signed-off-by: Josh Martinez <8892161+joshermar@users.noreply.github.com>
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---
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drivers/hwmon/aht10.c | 12 ++++++++++--
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1 file changed, 10 insertions(+), 2 deletions(-)
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--- a/drivers/hwmon/aht10.c
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+++ b/drivers/hwmon/aht10.c
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@@ -37,6 +37,8 @@
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#define AHT10_CMD_MEAS 0b10101100
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#define AHT10_CMD_RST 0b10111010
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+#define AHT20_CMD_INIT 0b10111110
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+
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/*
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* Flags in the answer byte/command
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*/
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@@ -59,6 +61,7 @@ MODULE_DEVICE_TABLE(i2c, aht10_id);
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static const struct of_device_id aht10_of_id[] = {
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{ .compatible = "aosong,aht10", },
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+ { .compatible = "aosong,aht20", },
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{ }
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};
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MODULE_DEVICE_TABLE(of, aht10_of_id);
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@@ -107,8 +110,13 @@ struct aht10_data {
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*/
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static int aht10_init(struct aht10_data *data)
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{
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- const u8 cmd_init[] = {AHT10_CMD_INIT, AHT10_CAL_ENABLED | AHT10_MODE_CYC,
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- 0x00};
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+ u8 cmd_init[] = {AHT10_CMD_INIT, AHT10_CAL_ENABLED | AHT10_MODE_CYC, 0x00};
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+
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+ if (data->crc8) { /* AHT20 */
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+ cmd_init[0] = AHT20_CMD_INIT;
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+ cmd_init[1] = AHT10_CAL_ENABLED;
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+ }
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+
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int res;
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u8 status;
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struct i2c_client *client = data->client;
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