From 768fbc1876b3239f4c463c00ea1e78725554cf21 Mon Sep 17 00:00:00 2001 From: Pawel Moll Date: Fri, 11 Mar 2011 17:18:07 +0000 Subject: mmc: mmci: Add ARM variant with extended FIFO New IO FPGA implementation for Versatile Express boards contain MMCI (PL180) cell with FIFO extended to 128 words (512 bytes). Matt Waddel reports that this patch improves MMC performance on his vexpress system, and also fixes "mmcblk0: error -5 transferring data" errors. Signed-off-by: Pawel Moll Tested-by: Matt Waddel Signed-off-by: Chris Ball --- drivers/mmc/host/mmci.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) (limited to 'drivers/mmc') diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index 5bbb87d1025..b4a7e4fba90 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -68,6 +68,12 @@ static struct variant_data variant_arm = { .datalength_bits = 16, }; +static struct variant_data variant_arm_extended_fifo = { + .fifosize = 128 * 4, + .fifohalfsize = 64 * 4, + .datalength_bits = 16, +}; + static struct variant_data variant_u300 = { .fifosize = 16 * 4, .fifohalfsize = 8 * 4, @@ -1277,9 +1283,14 @@ static int mmci_resume(struct amba_device *dev) static struct amba_id mmci_ids[] = { { .id = 0x00041180, - .mask = 0x000fffff, + .mask = 0xff0fffff, .data = &variant_arm, }, + { + .id = 0x01041180, + .mask = 0xff0fffff, + .data = &variant_arm_extended_fifo, + }, { .id = 0x00041181, .mask = 0x000fffff, -- cgit v1.2.3-18-g5258