diff options
Diffstat (limited to 'recipes/linux/linux-omap-2.6.27/musb-fix-dbrownell.patch')
| -rw-r--r-- | recipes/linux/linux-omap-2.6.27/musb-fix-dbrownell.patch | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/recipes/linux/linux-omap-2.6.27/musb-fix-dbrownell.patch b/recipes/linux/linux-omap-2.6.27/musb-fix-dbrownell.patch new file mode 100644 index 0000000000..3526cd3ca6 --- /dev/null +++ b/recipes/linux/linux-omap-2.6.27/musb-fix-dbrownell.patch @@ -0,0 +1,71 @@ +From: David Brownell <dbrownell@users.sourceforge.net> + +Minor cleanups to omap 2430/34xx/35x musb_hdrc init: + + - num_eps is 16; here, each one is bidirectional + - use DMA_32BIT_MASK to prevent confusion/errors + - initialize root port power to reflect 100 mA limit + +This still hard-wires some board-specific data, since there +are no hooks through which different boards can provide the +right data to the init code. + +Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> + +--- a/arch/arm/mach-omap2/usb-musb.c ++++ b/arch/arm/mach-omap2/usb-musb.c +@@ -21,12 +21,15 @@ + #include <linux/delay.h> + #include <linux/platform_device.h> + #include <linux/clk.h> ++#include <linux/dma-mapping.h> ++ + #include <asm/io.h> +-#include <mach/mux.h> ++ + #include <linux/usb/musb.h> + + #include <mach/hardware.h> + #include <mach/pm.h> ++#include <mach/mux.h> + #include <mach/usb.h> + + #ifdef CONFIG_USB_MUSB_SOC +@@ -109,7 +112,7 @@ static struct musb_hdrc_config musb_config = { + .dyn_fifo = 1, + .soft_con = 1, + .dma = 1, +- .num_eps = 32, ++ .num_eps = 16, + .dma_channels = 7, + .dma_req_chan = (1 << 0) | (1 << 1) | (1 << 2) | (1 << 3), + .ram_bits = 12, +@@ -129,16 +132,22 @@ static struct musb_hdrc_platform_data musb_plat = { + : "usbhs_ick", + .set_clock = musb_set_clock, + .config = &musb_config, ++ ++ /* REVISIT charge pump on TWL4030 can supply up to ++ * 100 mA ... but this value is board-specific, like ++ * "mode", and should be passed to usb_musb_init(). ++ */ ++ .power = 50, /* up to 100 mA */ + }; + +-static u64 musb_dmamask = ~(u32)0; ++static u64 musb_dmamask = DMA_32BIT_MASK; + + static struct platform_device musb_device = { + .name = "musb_hdrc", + .id = -1, + .dev = { + .dma_mask = &musb_dmamask, +- .coherent_dma_mask = 0xffffffff, ++ .coherent_dma_mask = DMA_32BIT_MASK, + .platform_data = &musb_plat, + }, + .num_resources = ARRAY_SIZE(musb_resources), +-- +To unsubscribe from this list: send the line "unsubscribe linux-omap" in +the body of a message to majordomo@vger.kernel.org +More majordomo info at http://vger.kernel.org/majordomo-info.html |