[U-Boot] [PATCH 7/8] t1024: increase IO drive strength

[Shengzhou Liu]

Increase IO drive strength to fix FCS error on RGMII ports
on T1024QDS and T1024RDB.

Signed-off-by: Shengzhou Liu <shengzhou....@freescale.com>
---
 arch/powerpc/include/asm/immap_85xx.h | 3 +++
 board/freescale/t102xqds/t102xqds.c   | 4 ++++
 board/freescale/t102xrdb/t102xrdb.c   | 3 +++
 3 files changed, 10 insertions(+)

diff --git a/arch/powerpc/include/asm/immap_85xx.h 
b/arch/powerpc/include/asm/immap_85xx.h
index 2128999..bf3adc7 100644
--- a/arch/powerpc/include/asm/immap_85xx.h
+++ b/arch/powerpc/include/asm/immap_85xx.h
@@ -1802,6 +1802,7 @@ defined(CONFIG_PPC_T1020) || defined(CONFIG_PPC_T1022)
 #define FSL_CORENET_RCWSR13_EC2                        0x0c000000
 #define FSL_CORENET_RCWSR13_EC2_RGMII          0x08000000
 #define CONFIG_SYS_FSL_SCFG_PIXCLKCR_OFFSET    0x28
+#define CONFIG_SYS_FSL_SCFG_IODSECR1_OFFSET    0xd00
 #define PXCKEN_MASK                            0x80000000
 #define PXCK_MASK                              0x00FF0000
 #define PXCK_BITS_START                                16
@@ -3051,6 +3052,8 @@ struct ccsr_sfp_regs {
        (CONFIG_SYS_CCSRBAR + CONFIG_SYS_FSL_SCFG_OFFSET)
 #define CONFIG_SYS_FSL_SCFG_PIXCLK_ADDR        \
        (CONFIG_SYS_FSL_SCFG_ADDR + CONFIG_SYS_FSL_SCFG_PIXCLKCR_OFFSET)
+#define CONFIG_SYS_FSL_SCFG_IODSECR1_ADDR \
+       (CONFIG_SYS_FSL_SCFG_ADDR + CONFIG_SYS_FSL_SCFG_IODSECR1_OFFSET)
 #define CONFIG_SYS_FSL_QMAN_ADDR \
        (CONFIG_SYS_IMMR + CONFIG_SYS_FSL_QMAN_OFFSET)
 #define CONFIG_SYS_FSL_BMAN_ADDR \
diff --git a/board/freescale/t102xqds/t102xqds.c 
b/board/freescale/t102xqds/t102xqds.c
index f7fc869..013024e 100644
--- a/board/freescale/t102xqds/t102xqds.c
+++ b/board/freescale/t102xqds/t102xqds.c
@@ -220,6 +220,10 @@ int board_early_init_r(void)
 #endif
        select_i2c_ch_pca9547(I2C_MUX_CH_DEFAULT);
        board_mux_lane_to_slot();
+
+       /* Increase IO drive strength to address FCS error on RGMII */
+       out_be32((unsigned *)CONFIG_SYS_FSL_SCFG_IODSECR1_ADDR, 0xbfdb7800);
+
        return 0;
 }
 
diff --git a/board/freescale/t102xrdb/t102xrdb.c 
b/board/freescale/t102xrdb/t102xrdb.c
index b1211d7..f1e19c4 100644
--- a/board/freescale/t102xrdb/t102xrdb.c
+++ b/board/freescale/t102xrdb/t102xrdb.c
@@ -87,6 +87,9 @@ int board_early_init_r(void)
        setup_portals();
 #endif
 
+       /* Increase IO drive strength to address FCS error on RGMII */
+       out_be32((unsigned *)CONFIG_SYS_FSL_SCFG_IODSECR1_ADDR, 0xbfdb7800);
+
        return 0;
 }
 
-- 
2.1.0.27.g96db324

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