1 files changed, 47 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-6.1/950-0863-reset-reset-brcmstb-rescal-Support-shared-use.patch b/target/linux/bcm27xx/patches-6.1/950-0863-reset-reset-brcmstb-rescal-Support-shared-use.patch
new file mode 100644
index 0000000000..a4328e5bc7
--- /dev/null
+++ b/target/linux/bcm27xx/patches-6.1/950-0863-reset-reset-brcmstb-rescal-Support-shared-use.patch
@@ -0,0 +1,47 @@
+From 87b1126181f79fb2558652af0d7fafd9deaab5f3 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Tue, 7 Sep 2021 14:49:00 +0100
+Subject: [PATCH] reset: reset-brcmstb-rescal: Support shared use
+
+reset_control_reset should not be used with shared reset controllers.
+Add support for reset_control_assert and _deassert to get the desired
+behaviour and avoid ugly warnings in the kernel log.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/reset/reset-brcmstb-rescal.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+--- a/drivers/reset/reset-brcmstb-rescal.c
++++ b/drivers/reset/reset-brcmstb-rescal.c
+@@ -20,6 +20,7 @@ struct brcm_rescal_reset {
+ 	struct reset_controller_dev rcdev;
+ };
+ 
++/* Also doubles a deassert */
+ static int brcm_rescal_reset_set(struct reset_controller_dev *rcdev,
+ 				 unsigned long id)
+ {
+@@ -52,6 +53,13 @@ static int brcm_rescal_reset_set(struct
+ 	return 0;
+ }
+ 
++/* A dummy function - deassert/reset does all the work */
++static int brcm_rescal_reset_assert(struct reset_controller_dev *rcdev,
++				    unsigned long id)
++{
++	return 0;
++}
++
+ static int brcm_rescal_reset_xlate(struct reset_controller_dev *rcdev,
+ 				   const struct of_phandle_args *reset_spec)
+ {
+@@ -61,6 +69,8 @@ static int brcm_rescal_reset_xlate(struc
+ 
+ static const struct reset_control_ops brcm_rescal_reset_ops = {
+ 	.reset = brcm_rescal_reset_set,
++	.deassert = brcm_rescal_reset_set,
++	.assert = brcm_rescal_reset_assert,
+ };
+ 
+ static int brcm_rescal_reset_probe(struct platform_device *pdev)