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-rw-r--r--target/linux/layerscape/patches-4.4/8037-ls1043a-Add-support-for-reset.patch56
1 files changed, 56 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-4.4/8037-ls1043a-Add-support-for-reset.patch b/target/linux/layerscape/patches-4.4/8037-ls1043a-Add-support-for-reset.patch
new file mode 100644
index 0000000000..bd2d90e9bc
--- /dev/null
+++ b/target/linux/layerscape/patches-4.4/8037-ls1043a-Add-support-for-reset.patch
@@ -0,0 +1,56 @@
+From 5d7f8473e3472c16703bf5692d0b13f47d08c70a Mon Sep 17 00:00:00 2001
+From: Shaohui Xie <Shaohui.Xie@freescale.com>
+Date: Fri, 22 Jan 2016 12:01:28 +0800
+Subject: [PATCH 37/70] ls1043a: Add support for reset
+
+The reset in ls1043a is similar to ls2085a, but accessed in big endian,
+so we modify the existing driver to handle endianness, if driver probes
+property 'big-endian' in DTS, driver works in big endian mode,
+otherwise, driver works in little endian by default.
+
+Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
+---
+ drivers/power/reset/ls-reboot.c | 18 +++++++++++++++---
+ 1 file changed, 15 insertions(+), 3 deletions(-)
+
+--- a/drivers/power/reset/ls-reboot.c
++++ b/drivers/power/reset/ls-reboot.c
+@@ -28,6 +28,7 @@
+ struct ls_reboot_priv {
+ struct device *dev;
+ u32 *rstcr;
++ bool is_big_endian;
+ };
+
+ static struct ls_reboot_priv *ls_reboot_priv;
+@@ -39,9 +40,15 @@ static void ls_reboot(enum reboot_mode r
+ unsigned long timeout;
+
+ if (ls_reboot_priv) {
+- val = readl(priv->rstcr);
+- val |= 0x02;
+- writel(val, priv->rstcr);
++ if (priv->is_big_endian) {
++ val = ioread32be(priv->rstcr);
++ val |= 0x02;
++ iowrite32be(val, priv->rstcr);
++ } else {
++ val = readl(priv->rstcr);
++ val |= 0x02;
++ writel(val, priv->rstcr);
++ }
+ }
+
+ timeout = jiffies + HZ;
+@@ -66,6 +73,11 @@ static int ls_reboot_probe(struct platfo
+ return -ENODEV;
+ }
+
++ if (of_get_property(pdev->dev.of_node, "big-endian", NULL))
++ ls_reboot_priv->is_big_endian = true;
++ else
++ ls_reboot_priv->is_big_endian = false;
++
+ ls_reboot_priv->dev = &pdev->dev;
+
+ arm_pm_restart = ls_reboot;