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rk817: correct the fuel gauge across boot and sleep #3305

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Merged
sydarn merged 3 commits into from
Sep 20, 2026
Merged

rk817: correct the fuel gauge across boot and sleep #3305

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f03ec13
rk817: correct the fuel gauge across boot and sleep
Jacob-Matthew-Cook Sep 19, 2026
39b77d2
rk817: clear SYS_CAN_SD at init, as the BSP does
Jacob-Matthew-Cook Sep 17, 2026
f79ac01
rk817: bound the boot soc with the ocv table
Jacob-Matthew-Cook Sep 18, 2026
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43 changes: 43 additions & 0 deletions .../linux/patches/mainline-rockchip/001-power-supply-rk817-charger-Fix-NVRAM-SoC-Value.patch
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Original file line number Diff line number Diff line change
@@ -0,0 +1,43 @@
From d6bc8b45fe18b1c8fdd7e4b8d5fa6f10d0eda4cd Mon Sep 17 00:00:00 2001
From: Chris Morgan <macromorgan@hotmail.com>
Date: Mon, 24 Aug 2026 17:10:11 -0500
Subject: [PATCH 1/2] power: supply: rk817-charger: Fix NVRAM SoC Value

The NVRAM value is stored as a value between 0 (0%) and 100000 (100%),
but the bounds checking checks and truncates with a max of 10000,
causing a value of 100% to get read as 10%.

Fixes: 11cb8da0189b ("power: supply: Add charger driver for Rockchip RK817")
Suggested-by: <jacobmcook1984@gmail.com>
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
---
drivers/power/supply/rk817_charger.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/power/supply/rk817_charger.c b/drivers/power/supply/rk817_charger.c
index 5558b182a1a6..86da0462fb59 100644
--- a/drivers/power/supply/rk817_charger.c
+++ b/drivers/power/supply/rk817_charger.c
@@ -728,7 +728,7 @@ static int rk817_read_battery_nvram_values(struct rk817_charger *charger)

/*
* Read the nvram for state of charge. Sanity check for values greater
- * than 100 (10000) or less than 0, because other things (BSP kernels,
+ * than 100 (100000) or less than 0, because other things (BSP kernels,
* U-Boot, or even i2cset) can write to this register. If the value is
* off it should get corrected automatically when the voltage drops to
* the min (soc is 0) or when the battery is full (soc is 100).
@@ -738,8 +738,8 @@ static int rk817_read_battery_nvram_values(struct rk817_charger *charger)
if (ret < 0)
return ret;
charger->soc = get_unaligned_le24(bulk_reg);
- if (charger->soc > 10000)
- charger->soc = 10000;
+ if (charger->soc > 100000)
+ charger->soc = 100000;
if (charger->soc < 0)
charger->soc = 0;

--
2.43.0

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