[PATCH] ARM: imx51: Add aipstz nodes

[PATCH] ARM: imx51: Add aipstz nodes

[Fabio Estevam]

From: Fabio Estevam <fabio.estevam@nxp.com>

Currently when trying to use the 'devmem' tool to read/write
registers the following bus error is observed:

# devmem 0x73fa80c4 32
[   82.689185] Unhandled fault: external abort on non-linefetch (0x1018) at 0xb6ff10c4
[   82.697071] pgd = (ptrval)
[   82.699920] [b6ff10c4] *pgd=a87c5831, *pte=73fa8383, *ppte=73fa8a33
Bus error

Add the aipstz nodes, so that the following function from
imx51_dt_init() can work properly:

	imx_aips_allow_unprivileged_access("fsl,imx51-aipstz");

After adding these nodes, 'devmem' tool can work correctly,
which is very useful for debugging purposes.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
---
 arch/arm/boot/dts/imx51.dtsi | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm/boot/dts/imx51.dtsi b/arch/arm/boot/dts/imx51.dtsi
index fe01b89..55e4174 100644
--- a/arch/arm/boot/dts/imx51.dtsi
+++ b/arch/arm/boot/dts/imx51.dtsi
@@ -250,6 +250,11 @@
 				};
 			};
 
+			aipstz1: bridge at 73f00000 {
+				compatible = "fsl,imx51-aipstz";
+				reg = <0x73f00000 0x60>;
+			};
+
 			usbotg: usb at 73f80000 {
 				compatible = "fsl,imx51-usb", "fsl,imx27-usb";
 				reg = <0x73f80000 0x0200>;
@@ -435,6 +440,11 @@
 			reg = <0x80000000 0x10000000>;
 			ranges;
 
+			aipstz2: bridge at 83f00000 {
+				compatible = "fsl,imx51-aipstz";
+				reg = <0x83f00000 0x60>;
+			};
+
 			iim: iim at 83f98000 {
 				compatible = "fsl,imx51-iim", "fsl,imx27-iim";
 				reg = <0x83f98000 0x4000>;
-- 
2.7.4

[PATCH] ARM: imx51: Add aipstz nodes

[Shawn Guo]

On Wed, Jun 20, 2018 at 03:06:19PM -0300, Fabio Estevam wrote:
> From: Fabio Estevam <fabio.estevam@nxp.com>
> 
> Currently when trying to use the 'devmem' tool to read/write
> registers the following bus error is observed:
> 
> # devmem 0x73fa80c4 32
> [   82.689185] Unhandled fault: external abort on non-linefetch (0x1018) at 0xb6ff10c4
> [   82.697071] pgd = (ptrval)
> [   82.699920] [b6ff10c4] *pgd=a87c5831, *pte=73fa8383, *ppte=73fa8a33
> Bus error
> 
> Add the aipstz nodes, so that the following function from
> imx51_dt_init() can work properly:
> 
> 	imx_aips_allow_unprivileged_access("fsl,imx51-aipstz");
> 
> After adding these nodes, 'devmem' tool can work correctly,
> which is very useful for debugging purposes.
> 
> Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>

Applied with changing prefix to 'ARM: dts: imx51: ...'.

Shawn