brain-hackers_pepepper-mirror/u-boot-brain
1
0
Fork 0
mirror of https://github.com/brain-hackers/u-boot-brain synced 2024-09-27 23:20:26 +09:00
Code Issues Projects Releases Wiki Activity

mmc: renesas-sdhi: Handle 16bit IP

Browse Source 
The Renesas RCar Gen2 chips have a mix of 32bit and 16bit variants
of the IP. There is no DT property which allows discerning those,
so what Linux does is it checks the size of the register area and
if it is 0x100, the IP is 16bit, otherwise the IP is 32bit. Handle
the distinction the same way.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Marek Vasut 2018-04-08 18:14:22 +02:00
parent c769e60990
commit 7cf7ef81ed
1 changed files with 13 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/mmc/renesas-sdhi.c
View File

@ -41,6 +41,19 @@ static const struct udevice_id renesas_sdhi_match[] = {
static int renesas_sdhi_probe(struct udevice *dev)
{
u32 quirks = dev_get_driver_data(dev);
struct fdt_resource reg_res;
DECLARE_GLOBAL_DATA_PTR;
int ret;
ret = fdt_get_resource(gd->fdt_blob, dev_of_offset(dev), "reg",
0, &reg_res);
if (ret < 0) {
dev_err(dev, "\"reg\" resource not found, ret=%i\n", ret);
return ret;
}
if (quirks == 0 && fdt_resource_size(&reg_res) == 0x100)
quirks = MATSU_SD_CAP_16BIT;
return matsu_sd_probe(dev, quirks);
}