Am 25.05.2016 um 02:19 schrieb Marek Vasut: > The Ingenic JZ47xx requires special bit (UART_EN) set in FCR register > in order to work at all. Add this special case handling into the driver. > > Signed-off-by: Marek Vasut <ma...@denx.de> > Cc: Tom Rini <tr...@konsulko.com> > Cc: Simon Glass <s...@chromium.org> > Cc: Daniel Schwierzeck <daniel.schwierz...@gmail.com> > Cc: Paul Burton <paul.bur...@imgtec.com> > --- > drivers/serial/ns16550.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c > index 30ba0aa..1323881 100644 > --- a/drivers/serial/ns16550.c > +++ b/drivers/serial/ns16550.c > @@ -50,6 +50,14 @@ DECLARE_GLOBAL_DATA_PTR; > #endif > #endif > > +#ifdef CONFIG_ARCH_JZ47XX > +#undef UART_FCRVAL > +/* Ingenic JZ47xx SoCs require that a 'UART Module Enable' bit be set */ > +#define UART_FCR_UME 0x10 > +#define UART_FCRVAL (UART_FCR_FIFO_EN | UART_FCR_RXSR | \ > + UART_FCR_TXSR | UART_FCR_UME) > +#endif
I think this could be added as DT property > + > #ifndef CONFIG_SYS_NS16550_IER > #define CONFIG_SYS_NS16550_IER 0x00 > #endif /* CONFIG_SYS_NS16550_IER */ > -- - Daniel
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