ipq806x: 6.1: backport patch fixing broken hwspinlock

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

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>

diff --git a/target/linux/ipq806x/patches-6.1/140-v6.5-hwspinlock-qcom-add-missing-regmap-config-for-SFPB-M.patch b/target/linux/ipq806x/patches-6.1/140-v6.5-hwspinlock-qcom-add-missing-regmap-config-for-SFPB-M.patch
new file mode 100644 (file)
index 0000000..faa9044
--- /dev/null
+++ b/target/linux/ipq806x/patches-6.1/140-v6.5-hwspinlock-qcom-add-missing-regmap-config-for-SFPB-M.patch
@@ -0,0 +1,49 @@
+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 = {