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* [PATCH v3] imx27: dt: only map 4 Kbyte for fec registers
@ 2015-05-12 22:18 ` Philippe Reynes
  0 siblings, 0 replies; 7+ messages in thread
From: Philippe Reynes @ 2015-05-12 22:18 UTC (permalink / raw)
  To: linux-arm-kernel

According to the imx27 documentation, fec has a 4 Kbyte
memory space map. Moreover, the actual 16 Kbyte mapping
overlaps the SCC (Security Controller) memory register
space. So, we reduce the memory register space to 4 Kbyte.

Signed-off-by: Philippe Reynes <tremyfr@gmail.com>
---
 arch/arm/boot/dts/imx27.dtsi |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

Changelog:
v2: (thanks Shawn Guo and Uwe Kleine-Konig)
- map 4 Kbyte instead of 1 Kbyte
v3:
- point that actual fec mapping overlap scc mapping (I forget it in v2)

diff --git a/arch/arm/boot/dts/imx27.dtsi b/arch/arm/boot/dts/imx27.dtsi
index 6951b66..bc215e4 100644
--- a/arch/arm/boot/dts/imx27.dtsi
+++ b/arch/arm/boot/dts/imx27.dtsi
@@ -533,7 +533,7 @@
 
 			fec: ethernet at 1002b000 {
 				compatible = "fsl,imx27-fec";
-				reg = <0x1002b000 0x4000>;
+				reg = <0x1002b000 0x1000>;
 				interrupts = <50>;
 				clocks = <&clks IMX27_CLK_FEC_IPG_GATE>,
 					 <&clks IMX27_CLK_FEC_AHB_GATE>;
-- 
1.7.4.4

^ permalink raw reply related	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2015-05-14  3:09 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2015-05-12 22:18 [PATCH v3] imx27: dt: only map 4 Kbyte for fec registers Philippe Reynes
2015-05-12 22:18 ` Philippe Reynes
2015-05-13  6:40 ` Uwe Kleine-König
2015-05-13  6:40   ` Uwe Kleine-König
2015-05-13  6:40   ` Uwe Kleine-König
2015-05-14  3:09 ` Shawn Guo
2015-05-14  3:09   ` Shawn Guo

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