diff mbox series

[v2,03/20] tty: serial: 8250: Add NPCM845 UART support

Message ID 20220608095623.22327-4-tmaimon77@gmail.com (mailing list archive)
State Handled Elsewhere
Headers show
Series Introduce Nuvoton Arbel NPCM8XX BMC SoC | expand

Commit Message

Tomer Maimon June 8, 2022, 9:56 a.m. UTC
Add Nuvoton BMC NPCM845 UART support.
The NPCM845 uses the same UART as the NPCM750.

Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
---
 drivers/tty/serial/8250/8250_of.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Arnd Bergmann June 8, 2022, 12:01 p.m. UTC | #1
On Wed, Jun 8, 2022 at 11:56 AM Tomer Maimon <tmaimon77@gmail.com> wrote:
>
> Add Nuvoton BMC NPCM845 UART support.
> The NPCM845 uses the same UART as the NPCM750.
>
> Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>


This one should no longer be needed if the timers are compatible with the
old ones and correctly described in the DT.

      Arnd
Tomer Maimon June 8, 2022, 1:40 p.m. UTC | #2
Hi Arnd,

Sorry but Just to clarify, This patch should not be applied and the
NPCM8XX UART should use nuvoton,npcm750-uart compatible in the device
tree?

Because I thought that in your comment a few weeks ago
https://www.spinics.net/lists/linux-serial/msg48179.html

We need only to modify the compatible string in the device tree as we
did in V2 patchset
https://www.spinics.net/lists/arm-kernel/msg986480.html

On Wed, 8 Jun 2022 at 15:01, Arnd Bergmann <arnd@arndb.de> wrote:
>
> On Wed, Jun 8, 2022 at 11:56 AM Tomer Maimon <tmaimon77@gmail.com> wrote:
> >
> > Add Nuvoton BMC NPCM845 UART support.
> > The NPCM845 uses the same UART as the NPCM750.
> >
> > Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
>
>
> This one should no longer be needed if the timers are compatible with the
> old ones and correctly described in the DT.
>
>       Arnd

Thanks,

Tomer
Arnd Bergmann June 8, 2022, 1:46 p.m. UTC | #3
On Wed, Jun 8, 2022 at 3:40 PM Tomer Maimon <tmaimon77@gmail.com> wrote:
>
> Sorry but Just to clarify, This patch should not be applied and the
> NPCM8XX UART should use nuvoton,npcm750-uart compatible in the device
> tree?
>
> Because I thought that in your comment a few weeks ago
> https://www.spinics.net/lists/linux-serial/msg48179.html
>
> We need only to modify the compatible string in the device tree as we
> did in V2 patchset
> https://www.spinics.net/lists/arm-kernel/msg986480.html

Yes, this is correct: with the DT file from v2, the driver no longer needs to be
changed, it will just match the fallback value.

       Arnd
diff mbox series

Patch

diff --git a/drivers/tty/serial/8250/8250_of.c b/drivers/tty/serial/8250/8250_of.c
index 5a699a1aa79c..edf83c90b4d5 100644
--- a/drivers/tty/serial/8250/8250_of.c
+++ b/drivers/tty/serial/8250/8250_of.c
@@ -335,6 +335,7 @@  static const struct of_device_id of_platform_serial_table[] = {
 	{ .compatible = "ti,da830-uart", .data = (void *)PORT_DA830, },
 	{ .compatible = "nuvoton,wpcm450-uart", .data = (void *)PORT_NPCM, },
 	{ .compatible = "nuvoton,npcm750-uart", .data = (void *)PORT_NPCM, },
+	{ .compatible = "nuvoton,npcm845-uart", .data = (void *)PORT_NPCM, },
 	{ /* end of list */ },
 };
 MODULE_DEVICE_TABLE(of, of_platform_serial_table);