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ns16550.c: Fix for ns16550 driver hanging on OMAP4

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The same problem that is seen on some OMAP3 is also seen on some OMAP4
so include them in the test in order to prevent some hangs during SPL.

[trini: Re-word commit message, make apply cleanly]
Signed-off-by: Tom Rini <trini@ti.com>
This commit is contained in:
Gregoire Gentil 2014-11-10 11:04:10 -08:00 committed by Tom Rini
parent 0c331ebcc6
commit 956a8bae53
1 changed files with 5 additions and 4 deletions
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9
drivers/serial/ns16550.c
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@ -132,11 +132,12 @@ static void NS16550_setbrg(NS16550_t com_port, int baud_divisor)
void NS16550_init(NS16550_t com_port, int baud_divisor)
{
#if (defined(CONFIG_SPL_BUILD) && defined(CONFIG_OMAP34XX))
#if (defined(CONFIG_SPL_BUILD) && \
(defined(CONFIG_OMAP34XX) || defined(CONFIG_OMAP44XX)))
/*
* On some OMAP3 devices when UART3 is configured for boot mode before
* SPL starts only THRE bit is set. We have to empty the transmitter
* before initialization starts.
* On some OMAP3/OMAP4 devices when UART3 is configured for boot mode
* before SPL starts only THRE bit is set. We have to empty the
* transmitter before initialization starts.
*/
if ((serial_in(&com_port->lsr) & (UART_LSR_TEMT | UART_LSR_THRE))
== UART_LSR_THRE) {