This is a note to let you know that I've just added the patch titled
mfd: axp20x: Mark AXP20X_VBUS_IPSOUT_MGMT as volatile
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mfd-axp20x-mark-axp20x_vbus_ipsout_mgmt-as-volatile.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From dc91c3b6fe66a13ac76f6cb3b2100c0779cd3350 Mon Sep 17 00:00:00 2001
From: Samuel Holland <samuel@xxxxxxxxxxxx>
Date: Sat, 4 Jan 2020 19:24:08 -0600
Subject: mfd: axp20x: Mark AXP20X_VBUS_IPSOUT_MGMT as volatile
From: Samuel Holland <samuel@xxxxxxxxxxxx>
commit dc91c3b6fe66a13ac76f6cb3b2100c0779cd3350 upstream.
On AXP288 and newer PMICs, bit 7 of AXP20X_VBUS_IPSOUT_MGMT can be set
to prevent using the VBUS input. However, when the VBUS unplugged and
plugged back in, the bit automatically resets to zero.
We need to set the register as volatile to prevent regmap from caching
that bit. Otherwise, regcache will think the bit is already set and not
write the register.
Fixes: cd53216625a0 ("mfd: axp20x: Fix axp288 volatile ranges")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Samuel Holland <samuel@xxxxxxxxxxxx>
Reviewed-by: Chen-Yu Tsai <wens@xxxxxxxx>
Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mfd/axp20x.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/mfd/axp20x.c
+++ b/drivers/mfd/axp20x.c
@@ -128,7 +128,7 @@ static const struct regmap_range axp288_
static const struct regmap_range axp288_volatile_ranges[] = {
regmap_reg_range(AXP20X_PWR_INPUT_STATUS, AXP288_POWER_REASON),
regmap_reg_range(AXP288_BC_GLOBAL, AXP288_BC_GLOBAL),
- regmap_reg_range(AXP288_BC_DET_STAT, AXP288_BC_DET_STAT),
+ regmap_reg_range(AXP288_BC_DET_STAT, AXP20X_VBUS_IPSOUT_MGMT),
regmap_reg_range(AXP20X_CHRG_BAK_CTRL, AXP20X_CHRG_BAK_CTRL),
regmap_reg_range(AXP20X_IRQ1_EN, AXP20X_IPSOUT_V_HIGH_L),
regmap_reg_range(AXP20X_TIMER_CTRL, AXP20X_TIMER_CTRL),
Patches currently in stable-queue which might be from samuel@xxxxxxxxxxxx are
queue-4.19/mfd-axp20x-mark-axp20x_vbus_ipsout_mgmt-as-volatile.patch
