mmc: dw_mmc: fixed a wrong UHS_REG 16 bit clear

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In the legacy code, driver clear not only UHS_REG 16 bit also 0-15bit.
If we use UHS-1 mode spec card like SDR50, SDR104. UHS_REG 0-15 should
be set by 1 according to slot id. In this case, legacy code can cause
problems.

In particular, UHS_REG consists of DDR_REG[31:16] and VOLT_REG[15:0].
Before adjusting this patch, bit[15:0] is always cleared.

Signed-off-by: Hyeonsu Kim <hyeonsu.kim@samsung.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

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Hyeonsu Kim 2013-02-22 09:32:46 +09:00 • committed by Chris Ball

parent 87a74d399a

commit c69042a51e

1 changed files with 2 additions and 2 deletions

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drivers/mmc/host/dw_mmc.c

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