57 lines
1.6 KiB
Diff
57 lines
1.6 KiB
Diff
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From 0499ca266f668c9d72217631151f3b6e15350134 Mon Sep 17 00:00:00 2001
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From: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
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Date: Wed, 15 Jun 2016 17:42:51 +0530
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Subject: [PATCH 58/93] mmc: fsl_esdhc: disable sdhc2 when no card inserted
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for ls1012ardb
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This is a temporary workaround patch for ls1012ardb becasue there
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was host controller hardware issue found on some RDB boards when
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there was no eMMC adapter card inserted. This would cause below
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continious error messages in linux. So this patch is to disable
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sdhc2 when finding there isn't card inserted.
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"mmc1: Controller never released inhibit bit(s)."
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Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
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---
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board/freescale/ls1012ardb/ls1012ardb.c | 24 ++++++++++++++++++++++++
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1 file changed, 24 insertions(+)
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diff --git a/board/freescale/ls1012ardb/ls1012ardb.c b/board/freescale/ls1012ardb/ls1012ardb.c
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index 90cbd5e..ad4d8ee 100644
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--- a/board/freescale/ls1012ardb/ls1012ardb.c
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+++ b/board/freescale/ls1012ardb/ls1012ardb.c
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@@ -171,6 +171,30 @@ int board_early_init_f(void)
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return 0;
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}
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+int mmc_check_sdhc2_card(void)
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+{
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+ u8 io = 0;
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+ u8 is_card = 0;
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+
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+ /* Initialize i2c early for Serial flash bank information */
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+ i2c_set_bus_num(0);
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+
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+ if (i2c_read(I2C_MUX_IO1_ADDR, 0, 1, &io, 1) < 0) {
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+ printf("Error reading i2c boot information!\n");
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+ return 0; /* Don't want to hang() on this error */
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+ }
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+
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+ io = io & 0x0c;
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+
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+ switch (io) {
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+ case 0:
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+ case 8:
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+ is_card = 1;
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+ }
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+
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+ return is_card;
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+}
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+
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int board_init(void)
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{
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struct ccsr_cci400 *cci = (struct ccsr_cci400 *)CONFIG_SYS_CCI400_ADDR;
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--
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1.7.9.5
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