linux-kernel - [PATCH 2/2] mfd: da9063: Make vbcore registers volatile

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20211124070001.2516750-2-andrej.picej@norik.com>
Date:   Wed, 24 Nov 2021 08:00:01 +0100
From:   Andrej Picej <andrej.picej@...ik.com>
To:     support.opensource@...semi.com, lee.jones@...aro.org
Cc:     linux-kernel@...r.kernel.org, andrej.picej@...ik.com,
        s.riedmueller@...tec.de
Subject: [PATCH 2/2] mfd: da9063: Make vbcore registers volatile

From: Stefan Riedmueller <s.riedmueller@...tec.de>

The VBCORE1_A and VBCORE2_A registers are used to set the desired output
voltage of the BCORE 1 and 2 buck regulators. These values can be critical
if used as input for core voltages. Thus make them volatile so they do not
get cached.

Signed-off-by: Stefan Riedmueller <s.riedmueller@...tec.de>
Signed-off-by: Andrej Picej <andrej.picej@...ik.com>
---
 drivers/mfd/da9063-i2c.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/mfd/da9063-i2c.c b/drivers/mfd/da9063-i2c.c
index 343ed6e96d87..8a3629c30382 100644
--- a/drivers/mfd/da9063-i2c.c
+++ b/drivers/mfd/da9063-i2c.c
@@ -161,6 +161,7 @@ static const struct regmap_range da9063_ad_volatile_ranges[] = {
 	regmap_reg_range(DA9063_REG_ADC_RES_L, DA9063_AD_REG_SECOND_D),
 	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_SEQ),
 	regmap_reg_range(DA9063_REG_EN_32K, DA9063_REG_EN_32K),
+	regmap_reg_range(DA9063_REG_VBCORE2_A, DA9063_REG_VBCORE2_A),
 	regmap_reg_range(DA9063_AD_REG_MON_REG_5, DA9063_AD_REG_MON_REG_6),
 };
 
@@ -206,6 +207,7 @@ static const struct regmap_range da9063_bb_da_volatile_ranges[] = {
 	regmap_reg_range(DA9063_REG_ADC_RES_L, DA9063_BB_REG_SECOND_D),
 	regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_SEQ),
 	regmap_reg_range(DA9063_REG_EN_32K, DA9063_REG_EN_32K),
+	regmap_reg_range(DA9063_REG_VBCORE2_A, DA9063_REG_VBCORE2_A),
 	regmap_reg_range(DA9063_BB_REG_MON_REG_5, DA9063_BB_REG_MON_REG_6),
 };
 
-- 
2.25.1