The LS1012AQDS board has a hardware issue. When there is no eMMC adapter card inserted, the command inhibit bits of eSDHC_PRSSTAT register will never release. This would cause below continious error messages in linux since it uses polling mode to detect card. "mmc1: Controller never released inhibit bit(s)." "mmc1: Controller never released inhibit bit(s)." "mmc1: Controller never released inhibit bit(s)." This patch is to define esdhc_status_fixup function to disable eSDHC2 status if no eMMC adapter card is detected.
Signed-off-by: Yangbo Lu yangbo.lu@nxp.com --- board/freescale/ls1012aqds/ls1012aqds.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)
diff --git a/board/freescale/ls1012aqds/ls1012aqds.c b/board/freescale/ls1012aqds/ls1012aqds.c index 94440b3..a3229f7 100644 --- a/board/freescale/ls1012aqds/ls1012aqds.c +++ b/board/freescale/ls1012aqds/ls1012aqds.c @@ -121,6 +121,25 @@ int board_eth_init(bd_t *bis) return pci_eth_init(bis); }
+int esdhc_status_fixup(void *blob, const char *compat) +{ + char esdhc0_path[] = "/soc/esdhc@1560000"; + char esdhc1_path[] = "/soc/esdhc@1580000"; + u8 card_id; + + do_fixup_by_path(blob, esdhc0_path, "status", "okay", + sizeof("okay"), 1); + + card_id = (QIXIS_READ(present2) & 0xe0) >> 5; + + if (card_id == 0x7) + do_fixup_by_path(blob, esdhc1_path, "status", "disabled", + sizeof("disabled"), 1); + else + do_fixup_by_path(blob, esdhc1_path, "status", "okay", + sizeof("okay"), 1); +} + #ifdef CONFIG_OF_BOARD_SETUP int ft_board_setup(void *blob, bd_t *bd) {