earlycon is executed quite early before the device tree probe,
so we need correctly initialize the port membase and iotype for
imx7ulp during early console setup before using.
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Cc: Jiri Slaby <jsl...@suse.com>
Cc: Stefan Agner <ste...@agner.ch>
Cc: Mingkai Hu <mingkai...@nxp.com>
Cc: Yangbo Lu <yangbo...@nxp.com>
Acked-by: Fugang Duan <fugang.d...@nxp.com>
Signed-off-by: Dong Aisheng <aisheng.d...@nxp.com>
---
Change Log:
v3->v4:
* No changes
v2->v3:
* use standard port->iotype to represent endians
v1->v2:
* updated due to lpuart_reg_off removed
---
drivers/tty/serial/fsl_lpuart.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
index 9486333..a0f2666 100644
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -1982,8 +1982,21 @@ static int __init lpuart32_early_console_setup(struct
earlycon_device *device,
return 0;
}
+static int __init lpuart32_imx_early_console_setup(struct earlycon_device
*device,
+ const char *opt)
+{
+ if (!device->port.membase)
+ return -ENODEV;
+
+ device->port.iotype = UPIO_MEM32;
+ device->port.membase += IMX_REG_OFF;
+ device->con->write = lpuart32_early_write;
+
+ return 0;
+}
OF_EARLYCON_DECLARE(lpuart, "fsl,vf610-lpuart", lpuart_early_console_setup);
OF_EARLYCON_DECLARE(lpuart32, "fsl,ls1021a-lpuart",
lpuart32_early_console_setup);
+OF_EARLYCON_DECLARE(lpuart32, "fsl,imx7ulp-lpuart",
lpuart32_imx_early_console_setup);
EARLYCON_DECLARE(lpuart, lpuart_early_console_setup);
EARLYCON_DECLARE(lpuart32, lpuart32_early_console_setup);
--
2.7.4
