From 26e3776a22bf894ced5af4c28968dc1dc99968eb Mon Sep 17 00:00:00 2001 From: nbd Date: Sat, 14 Mar 2009 15:52:42 +0000 Subject: nuke obsolete kernel stuff git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14875 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../1236-add-limit-sdcard-clk-cmdline.patch.patch | 109 --------------------- 1 file changed, 109 deletions(-) delete mode 100644 target/linux/s3c24xx/patches-2.6.24/1236-add-limit-sdcard-clk-cmdline.patch.patch (limited to 'target/linux/s3c24xx/patches-2.6.24/1236-add-limit-sdcard-clk-cmdline.patch.patch') diff --git a/target/linux/s3c24xx/patches-2.6.24/1236-add-limit-sdcard-clk-cmdline.patch.patch b/target/linux/s3c24xx/patches-2.6.24/1236-add-limit-sdcard-clk-cmdline.patch.patch deleted file mode 100644 index 01200c485a..0000000000 --- a/target/linux/s3c24xx/patches-2.6.24/1236-add-limit-sdcard-clk-cmdline.patch.patch +++ /dev/null @@ -1,109 +0,0 @@ -From ef2376d29e996d9d21a9e5798cb88aa73f734c83 Mon Sep 17 00:00:00 2001 -From: Andy Green -Date: Thu, 17 Jul 2008 10:02:35 +0100 -Subject: [PATCH] add-limit-sdcard-clk-cmdline.patch - -This patch allows you to control the maximum clock rate that will -be selected for SD Card access, from the kernel commandline using - - glamo_mci.sd_max_clk=10000000 - -and also from - - echo 10000000 > /sys/module/glamo_mci/parameters/sd_max_clk - -although you have to suspend and resume to make the limit operational -on the actual SD_CLK line. - -Clocks that are possible are divided down from ~50MHz, so 25000000, -16666666, 12500000, 10000000, etc. With Freerunner A5 revision that -has 100R series resistors in SD Card signals, I didn't get reliable -operation above 16MHz. With A6 revision the series resistors went -down to 75R, maybe it can work at 25MHz. - -Reducing the clock rate is something to try if you find that your -SD Card is not communicating properly with the default speed. - -Signed-off-by: Andy Green ---- - drivers/mfd/glamo/glamo-mci.c | 38 +++++++++++++++++++++++++++++--------- - 1 files changed, 29 insertions(+), 9 deletions(-) - -diff --git a/drivers/mfd/glamo/glamo-mci.c b/drivers/mfd/glamo/glamo-mci.c -index 350b47d..6729244 100644 ---- a/drivers/mfd/glamo/glamo-mci.c -+++ b/drivers/mfd/glamo/glamo-mci.c -@@ -40,6 +40,24 @@ static spinlock_t clock_lock; - - static void glamo_mci_send_request(struct mmc_host *mmc); - -+/* -+ * Max SD clock rate -+ * -+ * held at /(3 + 1) due to concerns of 100R recommended series resistor -+ * allows 16MHz @ 4-bit --> 8MBytes/sec raw -+ * -+ * you can override this on kernel commandline using -+ * -+ * glamo_mci.sd_max_clk=10000000 -+ * -+ * for example -+ */ -+ -+static int sd_max_clk = 50000000 / 3; -+module_param(sd_max_clk, int, 0644); -+ -+ -+ - unsigned char CRC7(u8 * pu8, int cnt) - { - u8 crc = 0; -@@ -676,9 +694,9 @@ static void glamo_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) - (ios->power_mode == MMC_POWER_UP)) { - dev_info(&host->pdev->dev, - "powered (vdd = %d) clk: %lukHz div=%d (req: %ukHz). " -- "Bus width=%d\n",ios->vdd, -- host->real_rate / 1000, host->real_rate, -- ios->clock / 1000, ios->bus_width); -+ "Bus width=%d\n",(int)ios->vdd, -+ host->real_rate / 1000, (int)host->clk_div, -+ ios->clock / 1000, (int)ios->bus_width); - } else - dev_info(&host->pdev->dev, "glamo_mci_set_ios: power down.\n"); - -@@ -800,11 +818,7 @@ static int glamo_mci_probe(struct platform_device *pdev) - MMC_CAP_MMC_HIGHSPEED | - MMC_CAP_SD_HIGHSPEED; - mmc->f_min = host->clk_rate / 256; -- /* -- * held at /4 due to concerns of 100R recommended series resistor -- * allows 16MHz @ 4-bit --> 8MBytes/sec raw -- */ -- mmc->f_max = host->clk_rate / 3; -+ mmc->f_max = sd_max_clk; - - mmc->max_blk_count = (1 << 16) - 1; /* GLAMO_REG_MMC_RB_BLKCNT */ - mmc->max_blk_size = (1 << 12) - 1; /* GLAMO_REG_MMC_RB_BLKLEN */ -@@ -866,12 +880,18 @@ static int glamo_mci_suspend(struct platform_device *dev, pm_message_t state) - { - struct mmc_host *mmc = platform_get_drvdata(dev); - struct glamo_mci_host *host = mmc_priv(mmc); -+ int ret; - - host->suspending++; - if (host->pdata->mci_all_dependencies_resumed) - (host->pdata->mci_suspending)(dev); - -- return mmc_suspend_host(mmc, state); -+ ret = mmc_suspend_host(mmc, state); -+ -+ /* so that when we resume, we use any modified max rate */ -+ mmc->f_max = sd_max_clk; -+ -+ return ret; - } - - int glamo_mci_resume(struct platform_device *dev) --- -1.5.6.5 - -- cgit v1.2.3