mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-05 16:37:50 +00:00
Code Issues Releases Wiki Activity

mmc: mmci: Add ARM variant with extended FIFO

Browse source 
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 <pawel.moll@arm.com>
Tested-by: Matt Waddel <matt.waddel@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Pawel Moll 2011-03-11 17:18:07 +00:00 committed by Chris Ball
parent a5289a433d
commit 768fbc1876
1 changed files with 12 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
drivers/mmc/host/mmci.c
View file

@ -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,