diff options
Diffstat (limited to 'target/linux/brcm2708/patches-3.10/0021-sdhci-bcm2708-use-extension-FIFO-to-buffer-DMA-trans.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-3.10/0021-sdhci-bcm2708-use-extension-FIFO-to-buffer-DMA-trans.patch | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/target/linux/brcm2708/patches-3.10/0021-sdhci-bcm2708-use-extension-FIFO-to-buffer-DMA-trans.patch b/target/linux/brcm2708/patches-3.10/0021-sdhci-bcm2708-use-extension-FIFO-to-buffer-DMA-trans.patch deleted file mode 100644 index 35c26cdc9b..0000000000 --- a/target/linux/brcm2708/patches-3.10/0021-sdhci-bcm2708-use-extension-FIFO-to-buffer-DMA-trans.patch +++ /dev/null @@ -1,54 +0,0 @@ -From b802bfd3bb337e92226bd521f8ebbbcfc6642333 Mon Sep 17 00:00:00 2001 -From: popcornmix <popcornmix@gmail.com> -Date: Sun, 12 May 2013 12:25:52 +0100 -Subject: [PATCH 021/196] sdhci-bcm2708: use extension FIFO to buffer DMA - transfers - -The additional FIFO might speed up transfers in some cases. ---- - drivers/mmc/host/sdhci-bcm2708.c | 11 +++++++++++ - 1 file changed, 11 insertions(+) - -diff --git a/drivers/mmc/host/sdhci-bcm2708.c b/drivers/mmc/host/sdhci-bcm2708.c -index 3792b9f..326b962 100644 ---- a/drivers/mmc/host/sdhci-bcm2708.c -+++ b/drivers/mmc/host/sdhci-bcm2708.c -@@ -74,6 +74,9 @@ - /* Mhz clock that the EMMC core is running at. Should match the platform clockman settings */ - #define BCM2708_EMMC_CLOCK_FREQ 50000000 - -+#define REG_EXRDFIFO_EN 0x80 -+#define REG_EXRDFIFO_CFG 0x84 -+ - /*****************************************************************************\ - * * - * Debug * -@@ -957,10 +960,12 @@ static ssize_t attr_dma_store(struct device *_dev, - int on = simple_strtol(buf, NULL, 0); - if (on) { - host->flags |= SDHCI_USE_PLATDMA; -+ sdhci_bcm2708_writel(host, 1, REG_EXRDFIFO_EN); - printk(KERN_INFO "%s: DMA enabled\n", - mmc_hostname(host->mmc)); - } else { - host->flags &= ~(SDHCI_USE_PLATDMA | SDHCI_REQ_USE_DMA); -+ sdhci_bcm2708_writel(host, 0, REG_EXRDFIFO_EN); - printk(KERN_INFO "%s: DMA disabled\n", - mmc_hostname(host->mmc)); - } -@@ -1272,6 +1277,12 @@ static int sdhci_bcm2708_probe(struct platform_device *pdev) - ret = device_create_file(&pdev->dev, &dev_attr_dma_wait); - ret = device_create_file(&pdev->dev, &dev_attr_status); - -+#ifdef CONFIG_MMC_SDHCI_BCM2708_DMA -+ /* enable extension fifo for paced DMA transfers */ -+ sdhci_bcm2708_writel(host, 1, REG_EXRDFIFO_EN); -+ sdhci_bcm2708_writel(host, 4, REG_EXRDFIFO_CFG); -+#endif -+ - printk(KERN_INFO "%s: BCM2708 SDHC host at 0x%08llx DMA %d IRQ %d\n", - mmc_hostname(host->mmc), (unsigned long long)iomem->start, - host_priv->dma_chan, host_priv->dma_irq); --- -1.9.1 - |