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ipq806x: 6.1: backport patch fixing broken hwspinlock

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Backport merged patch fixing broken hwspinlock due to missing regmap
config for SFPB MMIO implementation.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
This commit is contained in:
Christian Marangi 2023-07-21 12:58:30 +02:00
parent 4ad4419490
commit d2a4b87743
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1 changed files with 49 additions and 0 deletions
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target/linux/ipq806x/patches-6.1/140-v6.5-hwspinlock-qcom-add-missing-regmap-config-for-SFPB-M.patch Normal file
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From 23316be8a9d450f33a21f1efe7d89570becbec58 Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Sun, 16 Jul 2023 04:28:04 +0200
Subject: [PATCH] hwspinlock: qcom: add missing regmap config for SFPB MMIO
implementation
Commit 5d4753f741d8 ("hwspinlock: qcom: add support for MMIO on older
SoCs") introduced and made regmap_config mandatory in the of_data struct
but didn't add the regmap_config for sfpb based devices.
SFPB based devices can both use the legacy syscon way to probe or the
new MMIO way and currently device that use the MMIO way are broken as
they lack the definition of the now required regmap_config and always
return -EINVAL (and indirectly makes fail probing everything that
depends on it, smem, nandc with smem-parser...)
Fix this by correctly adding the missing regmap_config and restore
function of hwspinlock on SFPB based devices with MMIO implementation.
Cc: stable@vger.kernel.org
Fixes: 5d4753f741d8 ("hwspinlock: qcom: add support for MMIO on older SoCs")
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Link: https://lore.kernel.org/r/20230716022804.21239-1-ansuelsmth@gmail.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
---
drivers/hwspinlock/qcom_hwspinlock.c | 9 +++++++++
1 file changed, 9 insertions(+)
--- a/drivers/hwspinlock/qcom_hwspinlock.c
+++ b/drivers/hwspinlock/qcom_hwspinlock.c
@@ -69,9 +69,18 @@ static const struct hwspinlock_ops qcom_
.unlock = qcom_hwspinlock_unlock,
};
+static const struct regmap_config sfpb_mutex_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+ .max_register = 0x100,
+ .fast_io = true,
+};
+
static const struct qcom_hwspinlock_of_data of_sfpb_mutex = {
.offset = 0x4,
.stride = 0x4,
+ .regmap_config = &sfpb_mutex_config,
};
static const struct regmap_config tcsr_msm8226_mutex_config = {