From 0f8cbc1829d9c7d9616fd29b366a99d037facdcd Mon Sep 17 00:00:00 2001 From: Jason Jin Date: Fri, 10 Oct 2008 11:41:01 +0800 Subject: Do not init SATA when disabled on 8536DS. SGMII and SATA share the serdes on MPC8536 CPU, When SATA disabled and the driver still try to access the SATA registers, the cpu will hangup. This patch try to fix this by reading the serdes status before the SATA initialize. Signed-off-by: Jason Jin Acked-by: Andy Fleming --- board/freescale/mpc8536ds/mpc8536ds.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'board/freescale/mpc8536ds/mpc8536ds.c') diff --git a/board/freescale/mpc8536ds/mpc8536ds.c b/board/freescale/mpc8536ds/mpc8536ds.c index 8216c70cae..3cf12fda56 100644 --- a/board/freescale/mpc8536ds/mpc8536ds.c +++ b/board/freescale/mpc8536ds/mpc8536ds.c @@ -608,6 +608,18 @@ get_board_ddr_clk(ulong dummy) } #endif +int is_sata_supported() +{ + volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR); + uint devdisr = gur->devdisr; + uint sdrs2_io_sel = + (gur->pordevsr & MPC85xx_PORDEVSR_SRDS2_IO_SEL) >> 27; + if (sdrs2_io_sel & 0x04) + return 0; + + return 1; +} + #if defined(CONFIG_OF_BOARD_SETUP) void ft_board_setup(void *blob, bd_t *bd) -- cgit v1.2.1