diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.1/0101-bcm2835-sdhost-Clear-HBLC-for-PIO-mode.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.1/0101-bcm2835-sdhost-Clear-HBLC-for-PIO-mode.patch | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.1/0101-bcm2835-sdhost-Clear-HBLC-for-PIO-mode.patch b/target/linux/brcm2708/patches-4.1/0101-bcm2835-sdhost-Clear-HBLC-for-PIO-mode.patch new file mode 100644 index 0000000..3909a35 --- /dev/null +++ b/target/linux/brcm2708/patches-4.1/0101-bcm2835-sdhost-Clear-HBLC-for-PIO-mode.patch @@ -0,0 +1,34 @@ +From 0ca1e1d7ffdfcf1e716205491a00bf025fb71a77 Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Wed, 1 Jul 2015 12:51:52 +0100 +Subject: [PATCH 101/121] bcm2835-sdhost: Clear HBLC for PIO mode + +Also update pio_limit default in overlay README. +--- + arch/arm/boot/dts/overlays/README | 2 +- + drivers/mmc/host/bcm2835-sdhost.c | 3 +-- + 2 files changed, 2 insertions(+), 3 deletions(-) + +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -441,7 +441,7 @@ Params: overclock_50 Clock ( + force_pio Disable DMA support (default off) + + pio_limit Number of blocks above which to use DMA +- (default 2) ++ (default 1) + + debug Enable debug output (default off) + +--- a/drivers/mmc/host/bcm2835-sdhost.c ++++ b/drivers/mmc/host/bcm2835-sdhost.c +@@ -699,8 +699,7 @@ static void bcm2835_sdhost_prepare_data( + bcm2835_sdhost_set_transfer_irqs(host); + + bcm2835_sdhost_write(host, data->blksz, SDHBCT); +- if (host->use_dma) +- bcm2835_sdhost_write(host, data->blocks, SDHBLC); ++ bcm2835_sdhost_write(host, host->use_dma ? data->blocks : 0, SDHBLC); + + BUG_ON(!host->data); + } |