linux-kernel - [PATCH 11/11] power: supply: qcom

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Message-Id: <20250619-smb2-smb5-support-v1-11-ac5dec51b6e1@linaro.org>
Date: Thu, 19 Jun 2025 16:55:19 +0200
From: Casey Connolly <casey.connolly@...aro.org>
To: Sebastian Reichel <sre@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>, Kees Cook <kees@...nel.org>, 
 "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Sebastian Reichel <sebastian.reichel@...labora.com>, 
 linux-hardening@...r.kernel.org, Casey Connolly <casey.connolly@...aro.org>
Subject: [PATCH 11/11] power: supply: qcom_smbx: program aicl rerun time

We don't know what the bootloader programmed here, but we want to have a
consistent value. Program the automatic input current limit detection to
re-run every 3 seconds. This seems to be necessary at least for smb5.

Signed-off-by: Casey Connolly <casey.connolly@...aro.org>
---
 drivers/power/supply/qcom_smbx.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/power/supply/qcom_smbx.c b/drivers/power/supply/qcom_smbx.c
index d902f3f43548191d3d0310ce90e699918ed0f16f..b723dba5b86daefb238ee6aae19b1b7e5236fce3 100644
--- a/drivers/power/supply/qcom_smbx.c
+++ b/drivers/power/supply/qcom_smbx.c
@@ -1091,8 +1091,14 @@ static int smb_probe(struct platform_device *pdev)
 	if (rc < 0)
 		return dev_err_probe(chip->dev, rc,
 				     "Couldn't write fast charge current cfg");

+	rc = regmap_write_bits(chip->regmap, chip->base + AICL_RERUN_TIME_CFG,
+			       AICL_RERUN_TIME_MASK, AIC_RERUN_TIME_3_SECS);
+	if (rc < 0)
+		return dev_err_probe(chip->dev, rc,
+				     "Couldn't write fast AICL rerun time");
+
 	/* Initialise charger state */
 	schedule_delayed_work(&chip->status_change_work, 0);

 	return 0;

-- 
2.49.0