openwrtv4/target/linux/layerscape/patches-4.4/8037-ls1043a-Add-support-for-reset.patch
Yutang Jiang c6c731fe31 layerscape: add 64b/32b target for ls1043ardb device
Add support for NXP layerscape ls1043ardb 64b/32b Dev board.

LS1043a is an SoC with 4x64-bit up to 1.6 GHz ARMv8 A53 cores.
ls1043ardb support features as: 2GB DDR4, 128MB NOR/512MB NAND, USB3.0, eSDHC,
I2C, GPIO, PCIe/Mini-PCIe, 6x1G/1x10G network port, etc.

64b/32b ls1043ardb target is using 4.4 kernel, and rcw/u-boot/fman images from
NXP QorIQ SDK release.

All of 4.4 kernel patches porting from SDK release or upstream.

QorIQ SDK ISOs can be downloaded from this location:
http://www.nxp.com/products/software-and-tools/run-time-software/linux-sdk/linux-sdk-for-qoriq-processors:SDKLINUX

Signed-off-by: Yutang Jiang <yutang.jiang@nxp.com>
2016-10-31 17:00:10 +01:00

56 lines
1.6 KiB
Diff

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;