The i.MX1 uart must be initialized slightly differently than on other
SoCs. Add an i.MX1 specific init function.
Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
---
include/serial/imx-uart.h | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/include/serial/imx-uart.h b/include/serial/imx-uart.h
index c23606569d..23cee26fcf 100644
--- a/include/serial/imx-uart.h
+++ b/include/serial/imx-uart.h
@@ -155,6 +155,27 @@ static inline void imx_uart_set_dte(void __iomem *uartbase)
writel(ufcr, uartbase + UFCR);
}
+static inline void imx1_uart_setup(void __iomem *uartbase)
+{
+ unsigned int refclock = 16000000;
+
+ writel(UCR1_UARTCLKEN, uartbase + UCR1);
+
+ writel(UCR2_IRTS | UCR2_WS | UCR2_TXEN | UCR2_RXEN | UCR2_SRST,
+ uartbase + UCR2);
+ writel(0, uartbase + UCR3);
+
+ writel((0b10 << UFCR_TXTL_SHF) | UFCR_RFDIV1 | (1 << UFCR_RXTL_SHF),
+ uartbase + UFCR);
+
+ writel(baudrate_to_ubir(CONFIG_BAUDRATE),
+ uartbase + UBIR);
+ writel(refclock_to_ubmr(refclock),
+ uartbase + UBMR);
+
+ writel(UCR1_UARTCLKEN | UCR1_UARTEN, uartbase + UCR1);
+}
+
static inline void imx50_uart_setup(void __iomem *uartbase)
{
imx_uart_setup(uartbase, 66666666);
--
2.20.1
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