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sata highbank: add bit-banged SGPIO driver support

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Highbank supports SGPIO by bit-banging out the SGPIO signals over
three GPIO pins defined in the DTB. Add support for this SGPIO
functionality.

Signed-off-by: Mark Langsdorf <mark.langsdorf@calxeda.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Mark Langsdorf
2013-06-06 07:52:41 -05:00
committed by Tejun Heo
parent 439d7a358f
commit d50b110f14
4 changed files with 163 additions and 6 deletions
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drivers/ata/ahci.h
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@@ -322,6 +322,7 @@ struct ahci_host_priv {
u32 em_buf_sz; /* EM buffer size in byte */
u32 em_msg_type; /* EM message type */
struct clk *clk; /* Only for platforms supporting clk */
void *plat_data; /* Other platform data */
};
extern int ahci_ignore_sss;