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| author | Alexander Shiyan <shc_work@mail.ru> | 2019-01-19 07:52:01 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-02-08 16:42:53 +0300 |
| commit | f3d5e4f18dba18d7c2303dda68b9dbcf5ccc05cd (patch) | |
| tree | 325d873caee753bca9ee40555d84a5afcb64686c /include/linux/ata_platform.h | |
| parent | 740c68a0cd42aab21ad9aaae092ff8a2215966b1 (diff) | |
| download | linux-f3d5e4f18dba18d7c2303dda68b9dbcf5ccc05cd.tar.xz | |
ata: pata_of_platform: Allow to use 16-bit wide data transfer
In some cases, the system bus can be configured for 16-bit mode,
in this case using read/write functions for 32-bit values
results in two cycles of 16 bits each, which is wrong.
This patch adds the devicetree flag to switch the driver to
use 16-bit mode for I/O transfers.
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/ata_platform.h')
| -rw-r--r-- | include/linux/ata_platform.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/ata_platform.h b/include/linux/ata_platform.h index ff2120215dec..9cafec92282d 100644 --- a/include/linux/ata_platform.h +++ b/include/linux/ata_platform.h @@ -19,7 +19,8 @@ extern int __pata_platform_probe(struct device *dev, struct resource *irq_res, unsigned int ioport_shift, int __pio_mask, - struct scsi_host_template *sht); + struct scsi_host_template *sht, + bool use16bit); /* * Marvell SATA private data |