diff options
Diffstat (limited to 'target/linux/layerscape/patches-4.4/8037-ls1043a-Add-support-for-reset.patch')
-rw-r--r-- | target/linux/layerscape/patches-4.4/8037-ls1043a-Add-support-for-reset.patch | 56 |
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; |