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