powerpc/t2080qds: fix for 1000BASE-KX
1000BASE-KX(1G-KX) uses SGMII protocol but the serdes lane runs in 1G-KX
mode. By default, the lane runs in SGMII mode, when a MAC uses a lane
in 1G-KX mode, corresponding bit in PCCR1 for the lane needs to be set,
and needs to fixup dtb accordingly for kernel to do proper initialization.
Hwconfig "fsl_1gkx" is used to indicate a MAC runs in 1G-KX mode, FM1 MAC
1/2/5/6/9/10 are available for 1G-KX, MAC 3/4 run in RGMII mode. To set a
MAC runs in 1G-KX mode, set its' corresponding env in "fsl_1gkx",
'fm1_1g1' stands for FM1-MAC1, 'fm1_1g2' stands for FM1-MAC2, etc.
If all MAC 1/2/5/6/9/10 run in 1G-KX mode, the hwconfig should has below
setting:
fsl_1gkx:fm1_1g1,fm1_1g2,fm1_1g5,fm1_1g6,fm1_1g9,fm1_1g10
Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
[York Sun: Fix compiling warning]
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/board/freescale/t208xqds/README b/board/freescale/t208xqds/README
index e3eb5ba..83060c1 100755
--- a/board/freescale/t208xqds/README
+++ b/board/freescale/t208xqds/README
@@ -104,6 +104,18 @@
set "fsl_10gkr_copper:fm1_10g1,fm1_10g2" in hwconfig, then first two
XFI ports will use copper cable, the other two XFI ports will use fiber
cable.
+1000BASE-KX(1G-KX):
+ - T2080QDS can support 1G-KX by using SGMII protocol, but serdes lane
+ runs in 1G-KX mode. By default, the lane runs in SGMII mode, to set a lane
+ in 1G-KX mode, need to set corresponding bit in SerDes Protocol Configuration
+ Register 1 (PCCR1), and U-boot fixup the dtb for kernel to do proper
+ initialization.
+ Hwconfig "fsl_1gkx" is used to indicate a lane runs in 1G-KX mode, MAC
+ 1/2/5/6/9/10 are available for 1G-KX, MAC 3/4 run in RGMII mode. To set a
+ MAC to use 1G-KX mode, set its' corresponding env in "fsl_1gkx", 'fm1_1g1'
+ stands for MAC 1, 'fm1_1g2' stands for MAC 2, etc.
+ For ex. set "fsl_1gkx:fm1_1g1,fm1_1g2,fm1_1g5,fm1_1g6,fm1_1g9,fm1_1g10" in
+ hwconfig, MAC 1/2/5/6/9/10 will use 1G-KX mode.
System Memory map
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