mmc: mmci: Add ARM variant with extended FIFO (768fbc18) · Commits · 戴 / test

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>

drivers/mmc/host/mmci.c

+12 −1

Original line number	Diff line number	Diff line
		@@ -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,

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