serial: sirf: move to writel for TXFIFO instead of writeb

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All SiRFSoC UART registers are in 32-bits. If we use writeb for
TXFIFO, actually all of 32-bits are still written, for TXTIFO,
only low 8-bits are valid, so in prima2&atlas6, this causes no
problem.
But in the new atlas7, using writeb to write UART registers will
cause an imprecise data abort as HW does check the "wrong" writeb.
So move to writel and this also makes the code consistent with
sirfsoc_uart_pio_tx_chars() in which we use writel.

Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Barry Song 2014-05-05 08:05:51 +08:00 • committed by Greg Kroah-Hartman

parent 717e1cb22f

commit 205c384f73

2 changed files with 1 additions and 3 deletions

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drivers/tty/serial/sirfsoc_uart.c

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drivers/tty/serial/sirfsoc_uart.h

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