From 0a6ec6db90c73b037428bf3a94a6281754007c25 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Mon, 17 Feb 2014 16:55:54 +0100 Subject: [PATCH] sunxi-mmc: Don't set mmc clk in low power mode The android driver uses an io-flag to descern whether a controller is hooked up to a sdcard slot, or to an onboard sdio dev. And for sdcard slots it sets the clock in a low-power mode. This is causing transmission errors when talking to the sdio-wifi on the cubietruck, and this may be the cause of problems with some type sdcards too. This patch fixes things by simply never setting the clk in low power mode. Signed-off-by: Hans de Goede --- drivers/mmc/host/sunxi-mmc.c | 3 --- drivers/mmc/host/sunxi-mmc.h | 1 - 2 files changed, 4 deletions(-) diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c index f4bfaf0..c1a9d8a 100644 --- a/drivers/mmc/host/sunxi-mmc.c +++ b/drivers/mmc/host/sunxi-mmc.c @@ -400,9 +400,6 @@ static void sunxi_mmc_oclk_onoff(struct sunxi_mmc_host *host, u32 oclk_en) if (oclk_en) rval |= SDXC_CARD_CLOCK_ON; - if (!host->io_flag) - rval |= SDXC_LOW_POWER_ON; - mci_writel(host, REG_CLKCR, rval); rval = SDXC_START | SDXC_UPCLK_ONLY | SDXC_WAIT_PRE_OVER; diff --git a/drivers/mmc/host/sunxi-mmc.h b/drivers/mmc/host/sunxi-mmc.h index cbd6d49..a738850 100644 --- a/drivers/mmc/host/sunxi-mmc.h +++ b/drivers/mmc/host/sunxi-mmc.h @@ -211,7 +211,6 @@ struct sunxi_mmc_host { /* flags */ u32 power_on:1; - u32 io_flag:1; u32 wait_dma:1; dma_addr_t sg_dma; -- 1.8.5.5