[PATCH v4 2/4] serial: 8250_dw: build Renesas RZN1 CPR value from DW_UART_CPR_* definitions

[Jia Wang]

Replace the magic CPR value for Renesas RZ/N1 with a composition using
DW_UART_CPR_* bit/field definitions and FIELD_PREP_CONST().

Signed-off-by: Jia Wang <wangjia at ultrarisc.com>
---
 drivers/tty/serial/8250/8250_dw.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index 467755bf0092..d3c2c9c84d9f 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -937,7 +937,15 @@ static const struct dw8250_platform_data dw8250_armada_38x_data = {
 
 static const struct dw8250_platform_data dw8250_renesas_rzn1_data = {
 	.usr_reg = DW_UART_USR,
-	.cpr_value = 0x00012f32,
+	.cpr_value = FIELD_PREP_CONST(DW_UART_CPR_ABP_DATA_WIDTH, 2) |
+		     DW_UART_CPR_AFCE_MODE |
+		     DW_UART_CPR_THRE_MODE |
+		     DW_UART_CPR_ADDITIONAL_FEATURES |
+		     DW_UART_CPR_FIFO_ACCESS |
+		     DW_UART_CPR_FIFO_STAT |
+		     DW_UART_CPR_SHADOW |
+		     DW_UART_CPR_DMA_EXTRA |
+		     FIELD_PREP_CONST(DW_UART_CPR_FIFO_MODE, 0x01),
 	.quirks = DW_UART_QUIRK_CPR_VALUE | DW_UART_QUIRK_IS_DMA_FC,
 };
 

-- 
2.34.1