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From 2e9349e8be6002955cb0ab6a6ed536f5f8041cba Mon Sep 17 00:00:00 2001
From: Andy Green <andy@openmoko.com>
Date: Fri, 25 Jul 2008 23:06:21 +0100
Subject: [PATCH] fix-glamo-mci-ensure-more-than-74-clocks-after-power.patch

We are meant to run SD_CLK a li
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-20 13:55:49 +0000
/span> drivers/mfd/glamo/glamo-mci.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/drivers/mfd/glamo/glamo-mci.c b/drivers/mfd/glamo/glamo-mci.c index 505be5f..0d82955 100644 --- a/drivers/mfd/glamo/glamo-mci.c +++ b/drivers/mfd/glamo/glamo-mci.c @@ -684,6 +684,7 @@ static void glamo_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) struct glamo_mci_host *host = mmc_priv(mmc); int n = 0; int div; + int powering = 0; /* Set power */ switch(ios->power_mode) { @@ -699,6 +700,7 @@ static void glamo_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) glamo_engine_enable(glamo_mci_def_pdata.pglamo, GLAMO_ENGINE_MMC); glamo_mci_reset(host); + powering = 1; break; case MMC_POWER_OFF: @@ -716,6 +718,12 @@ static void glamo_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) host->real_rate = __glamo_mci_set_card_clock(host, ios->clock, &div); host->clk_div = div; + /* after power-up, we are meant to give it >= 74 clocks so it can + * initialize itself. Doubt any modern cards need it but anyway... + */ + if (powering) + msleep(1); + if (!sd_idleclk) /* stop the clock to card, because we are idle until transfer */ __glamo_mci_fix_card_div(host, -1); -- 1.5.6.3
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-20 13:55:49 +0000