bcm27xx: bcm2712: backport RP1 interrupt affinity

[openwrt/staging/xback.git] / target / linux / bcm27xx / patches-6.1 / 961-3-pinctrl-rp1-Allow-legacy-brcm-pins-on-all-banks.patch

diff --git a/target/linux/bcm27xx/patches-6.1/961-3-pinctrl-rp1-Allow-legacy-brcm-pins-on-all-banks.patch b/target/linux/bcm27xx/patches-6.1/961-3-pinctrl-rp1-Allow-legacy-brcm-pins-on-all-banks.patch
new file mode 100644 (file)
index 0000000..4550188
--- /dev/null
+++ b/target/linux/bcm27xx/patches-6.1/961-3-pinctrl-rp1-Allow-legacy-brcm-pins-on-all-banks.patch
@@ -0,0 +1,47 @@
+From d81e2fafab376d3975c46c5f477945384a38524d Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Thu, 4 Apr 2024 10:50:32 +0100
+Subject: [PATCH 3/5] pinctrl: rp1: Allow legacy brcm,pins on all banks
+
+Support the use of the brcm,pins property for GPIOs in banks 1 and 2,
+but only for inputs and outputs - no other legacy mapping.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ drivers/pinctrl/pinctrl-rp1.c | 18 ++++++++++--------
+ 1 file changed, 10 insertions(+), 8 deletions(-)
+
+--- a/drivers/pinctrl/pinctrl-rp1.c
++++ b/drivers/pinctrl/pinctrl-rp1.c
+@@ -981,7 +981,16 @@ static int rp1_pctl_legacy_map_func(stru
+               return -EINVAL;
+       }
+ 
+-      func = legacy_fsel_map[pin][fnum];
++      if (pin < ARRAY_SIZE(legacy_fsel_map)) {
++              func = legacy_fsel_map[pin][fnum];
++      } else if (fnum < 2) {
++              func = func_gpio;
++      } else {
++              dev_err(pc->dev, "%pOF: invalid brcm,pins value %d\n",
++                      np, pin);
++              return -EINVAL;
++      }
++
+       if (func == func_invalid) {
+               dev_err(pc->dev, "%pOF: brcm,function %d not supported on pin %d\n",
+                       np, fnum, pin);
+@@ -1104,13 +1113,6 @@ static int rp1_pctl_dt_node_to_map(struc
+               err = of_property_read_u32_index(np, "brcm,pins", i, &pin);
+               if (err)
+                       goto out;
+-              if (pin >= ARRAY_SIZE(legacy_fsel_map)) {
+-                      dev_err(pc->dev, "%pOF: invalid brcm,pins value %d\n",
+-                              np, pin);
+-                      err = -EINVAL;
+-                      goto out;
+-              }
+-
+               if (num_funcs) {
+                       err = of_property_read_u32_index(np, "brcm,function",
+                                                        (num_funcs > 1) ? i : 0,