diff options
Diffstat (limited to 'board/kontron/sl28/spl.c')
| -rw-r--r-- | board/kontron/sl28/spl.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/board/kontron/sl28/spl.c b/board/kontron/sl28/spl.c index 0ef67e2886..0e6ad5f37e 100644 --- a/board/kontron/sl28/spl.c +++ b/board/kontron/sl28/spl.c @@ -3,10 +3,36 @@ #include <common.h> #include <asm/io.h> #include <asm/spl.h> +#include <asm/arch-fsl-layerscape/fsl_serdes.h> +#include <asm/arch-fsl-layerscape/soc.h> #define DCFG_RCWSR25 0x160 #define GPINFO_HW_VARIANT_MASK 0xff +#define SERDES_LNDGCR0 0x1ea08c0 +#define LNDGCR0_PROTS_MASK GENMASK(11, 7) +#define LNDGCR0_PROTS_SATA (0x2 << 7) +#define SERDES_LNDGCR1 0x1ea08c4 +#define LNDGCR1_RDAT_INV BIT(31) + +/* + * On this board the SMARC PCIe lane D might be switched to SATA mode. This + * makes sense if this lane is connected to a Mini PCI slot and a mSATA card + * is plugged in. In this case, the RX pair is swapped and we need to invert + * the received data. + */ +static void fixup_sata_rx_polarity(void) +{ + u32 prot = in_le32(SERDES_LNDGCR0) & LNDGCR0_PROTS_MASK; + u32 tmp; + + if (prot == LNDGCR0_PROTS_SATA) { + tmp = in_le32(SERDES_LNDGCR1); + tmp |= LNDGCR1_RDAT_INV; + out_le32(SERDES_LNDGCR1, tmp); + } +} + int sl28_variant(void) { return in_le32(DCFG_BASE + DCFG_RCWSR25) & GPINFO_HW_VARIANT_MASK; @@ -34,3 +60,11 @@ void board_boot_order(u32 *spl_boot_list) { spl_boot_list[0] = BOOT_DEVICE_SPI; } + +int board_early_init_f(void) +{ + fixup_sata_rx_polarity(); + fsl_lsch3_early_init_f(); + + return 0; +} |