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[PATCH] Some SD cards require more retries in mmc_init

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This patch effectively doubles maximum time allowed for retries performed by
mmc_init. Also, the delay was shortened to lower the average time needed to
init a card. Without it, i was unable to boot from Transcend TS8GUSDHC4
(appending rootdelay=1 was necessary as well).
This commit is contained in:
Paul Fertser 2008-12-13 20:34:46 +00:00 committed by Andy Green
parent 51ce8bac68
commit 177921a4e6
1 changed files with 2 additions and 4 deletions
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6
qiboot/src/drivers/glamo-mmc.c
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@ -609,7 +609,7 @@ static void print_sd_cid(const struct sd_cid *cid)
int mmc_init(int verbose) int mmc_init(int verbose)
{ {
int retries = 50, rc = -1; int retries = 3000, rc = -1;
int resp; int resp;
u8 response[16]; u8 response[16];
// mmc_cid_t *mmc_cid = (mmc_cid_t *)response; // mmc_cid_t *mmc_cid = (mmc_cid_t *)response;
@ -675,9 +675,7 @@ int mmc_init(int verbose)
while (retries--) { while (retries--) {
udelay(100000); udelay(10000);
udelay(100000);
udelay(100000);
resp = mmc_cmd(MMC_APP_CMD, 0x00000000, resp = mmc_cmd(MMC_APP_CMD, 0x00000000,
MMC_CMD_AC | MMC_RSP_R1, 0, 0, 0, MMC_CMD_AC | MMC_RSP_R1, 0, 0, 0,