layerscape: add 64b/32b target for ls1043ardb device

[openwrt/staging/yousong.git] / target / linux / layerscape / patches-4.4 / 8037-ls1043a-Add-support-for-reset.patch

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 (file)
index 0000000..bd2d90e
--- /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;