mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-25 00:48:26 +02:00
53 lines
1.7 KiB
Diff
53 lines
1.7 KiB
Diff
|
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 little while after power-on for the SD
|
||
|
|
Card, but with the no idle clock changes we didn't take care about it.
|
||
|
|
|
||
|
|
This makes us sleep a little bit before disabling clock if we just
|
||
|
|
powered up the SD Card.
|
||
|
|
|
||
|
|
Signed-off-by: Andy Green <andy@openmoko.com>
|
||
|
|
---
|
||
|
|
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
|
||
|
|
|