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| author | Yangbo Lu <yangbo.lu@nxp.com> | 2017-01-17 10:43:55 +0800 |
|---|---|---|
| committer | York Sun <york.sun@nxp.com> | 2017-01-18 09:46:45 -0800 |
| commit | 208e1ae8d1668278fe46f13d8d7c0e40f7cdc6ec (patch) | |
| tree | ef0211890d6a2ebc219ebd9a9718db5fdc11fac8 | |
| parent | fce1e16c55ff9c93c21adad0155e435bcfe2fa6b (diff) | |
| download | u-boot-imx-208e1ae8d1668278fe46f13d8d7c0e40f7cdc6ec.zip u-boot-imx-208e1ae8d1668278fe46f13d8d7c0e40f7cdc6ec.tar.gz u-boot-imx-208e1ae8d1668278fe46f13d8d7c0e40f7cdc6ec.tar.bz2 | |
armv8: ls1012a: define esdhc_status_fixup for QDS board
The LS1012AQDS board has a hardware issue. When there is no eMMC
adapter card inserted in SDHC2 adapter slot, the command inhibit
bits of eSDHC2_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 for QDS to
disable SDHC2 status if no eMMC adapter card is detected.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
| -rw-r--r-- | board/freescale/ls1012aqds/ls1012aqds.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/board/freescale/ls1012aqds/ls1012aqds.c b/board/freescale/ls1012aqds/ls1012aqds.c index 94440b3..88fb4ce 100644 --- a/board/freescale/ls1012aqds/ls1012aqds.c +++ b/board/freescale/ls1012aqds/ls1012aqds.c @@ -121,6 +121,34 @@ 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); + + /* + * The Presence Detect 2 register detects the installation + * of cards in various PCI Express or SGMII slots. + * + * STAT_PRS2[7:5]: Specifies the type of card installed in the + * SDHC2 Adapter slot. 0b111 indicates no adapter is installed. + */ + card_id = (QIXIS_READ(present2) & 0xe0) >> 5; + + /* If no adapter is installed in SDHC2, disable SDHC2 */ + 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); + return 0; +} + #ifdef CONFIG_OF_BOARD_SETUP int ft_board_setup(void *blob, bd_t *bd) { |