* [PATCH] ARM: debug: add UART early console support for MSTAR SoCs
@ 2021-05-03 18:04 Romain Perier
2021-05-04 2:54 ` Daniel Palmer
0 siblings, 1 reply; 2+ messages in thread
From: Romain Perier @ 2021-05-03 18:04 UTC (permalink / raw)
To: Russell King, Arnd Bergmann
Cc: Krzysztof Kozlowski, Linus Walleij, Alain VOLMAT, Kefeng Wang,
Rob Herring, Uwe Kleine-König, linux-arm-kernel,
Daniel Palmer, Mohammed Billoo
This adds the debug_ll uart for the PM UART found on armv7-based MStar
SoCs.
Signed-off-by: Romain Perier <romain.perier@gmail.com>
---
arch/arm/Kconfig.debug | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 36016497b1b3..4f1dd41d639a 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -607,6 +607,14 @@ choice
when u-boot hands over to the kernel, the system
silently crashes, with no serial output at all.
+ config DEBUG_MSTAR_PMUART
+ bool "Kernel low-level debugging messages via MSTAR PM UART"
+ depends on ARCH_MSTARV7
+ select DEBUG_UART_8250
+ help
+ Say Y here if you want kernel low-level debugging support
+ for MSTAR based platforms on PM UART.
+
config DEBUG_MT6589_UART0
bool "Mediatek mt6589 UART0"
depends on ARCH_MEDIATEK
@@ -1605,6 +1613,7 @@ config DEBUG_UART_PHYS
default 0x18000400 if DEBUG_BCM_HR2
default 0x18023000 if DEBUG_BCM_IPROC_UART3
default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1
+ default 0x1f221000 if DEBUG_MSTAR_PMUART
default 0x20001000 if DEBUG_HIP01_UART
default 0x20060000 if DEBUG_RK29_UART0
default 0x20064000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
@@ -1722,6 +1731,7 @@ config DEBUG_UART_VIRT
default 0xf0100000 if DEBUG_DIGICOLOR_UA0
default 0xf01fb000 if DEBUG_NOMADIK_UART
default 0xf0201000 if DEBUG_BCM2835 || DEBUG_BCM2836
+ default 0xf0221000 if DEBUG_MSTAR_PMUART
default 0xf1000300 if DEBUG_BCM_5301X
default 0xf1000400 if DEBUG_BCM_HR2
default 0xf1002000 if DEBUG_MT8127_UART0
@@ -1827,6 +1837,7 @@ config DEBUG_UART_8250_SHIFT
default 0 if DEBUG_FOOTBRIDGE_COM1 || ARCH_IOP32X || DEBUG_BCM_5301X || \
DEBUG_BCM_HR2 || DEBUG_OMAP7XXUART1 || DEBUG_OMAP7XXUART2 || \
DEBUG_OMAP7XXUART3
+ default 3 if DEBUG_MSTAR_PMUART
default 2
config DEBUG_UART_8250_WORD
--
2.30.2
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^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] ARM: debug: add UART early console support for MSTAR SoCs
2021-05-03 18:04 [PATCH] ARM: debug: add UART early console support for MSTAR SoCs Romain Perier
@ 2021-05-04 2:54 ` Daniel Palmer
0 siblings, 0 replies; 2+ messages in thread
From: Daniel Palmer @ 2021-05-04 2:54 UTC (permalink / raw)
To: Romain Perier
Cc: Russell King, Arnd Bergmann, Krzysztof Kozlowski, Linus Walleij,
Alain VOLMAT, Kefeng Wang, Rob Herring, Uwe Kleine-König,
linux-arm-kernel, Mohammed Billoo
Hi Romain,
On Tue, 4 May 2021 at 03:04, Romain Perier <romain.perier@gmail.com> wrote:
>
> This adds the debug_ll uart for the PM UART found on armv7-based MStar
> SoCs.
>
> Signed-off-by: Romain Perier <romain.perier@gmail.com>
> ---
> arch/arm/Kconfig.debug | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
> diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
> index 36016497b1b3..4f1dd41d639a 100644
> --- a/arch/arm/Kconfig.debug
> +++ b/arch/arm/Kconfig.debug
> @@ -607,6 +607,14 @@ choice
> when u-boot hands over to the kernel, the system
> silently crashes, with no serial output at all.
>
> + config DEBUG_MSTAR_PMUART
The only minor thing I can think of here is that maybe this should be
MSTARV7 to match the ARCH.
I'm not sure the PM UART is in the same place for the pre-ARMv7 stuff
and for the MIPS stuff before that.
> + bool "Kernel low-level debugging messages via MSTAR PM UART"
> + depends on ARCH_MSTARV7
> + select DEBUG_UART_8250
> + help
> + Say Y here if you want kernel low-level debugging support
> + for MSTAR based platforms on PM UART.
> +
> config DEBUG_MT6589_UART0
> bool "Mediatek mt6589 UART0"
> depends on ARCH_MEDIATEK
> @@ -1605,6 +1613,7 @@ config DEBUG_UART_PHYS
> default 0x18000400 if DEBUG_BCM_HR2
> default 0x18023000 if DEBUG_BCM_IPROC_UART3
> default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1
> + default 0x1f221000 if DEBUG_MSTAR_PMUART
> default 0x20001000 if DEBUG_HIP01_UART
> default 0x20060000 if DEBUG_RK29_UART0
> default 0x20064000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
> @@ -1722,6 +1731,7 @@ config DEBUG_UART_VIRT
> default 0xf0100000 if DEBUG_DIGICOLOR_UA0
> default 0xf01fb000 if DEBUG_NOMADIK_UART
> default 0xf0201000 if DEBUG_BCM2835 || DEBUG_BCM2836
> + default 0xf0221000 if DEBUG_MSTAR_PMUART
> default 0xf1000300 if DEBUG_BCM_5301X
> default 0xf1000400 if DEBUG_BCM_HR2
> default 0xf1002000 if DEBUG_MT8127_UART0
> @@ -1827,6 +1837,7 @@ config DEBUG_UART_8250_SHIFT
> default 0 if DEBUG_FOOTBRIDGE_COM1 || ARCH_IOP32X || DEBUG_BCM_5301X || \
> DEBUG_BCM_HR2 || DEBUG_OMAP7XXUART1 || DEBUG_OMAP7XXUART2 || \
> DEBUG_OMAP7XXUART3
> + default 3 if DEBUG_MSTAR_PMUART
> default 2
>
> config DEBUG_UART_8250_WORD
> --
> 2.30.2
>
Aside from the MSTARV7 thing this looks good and I quickly tested on
an SSD202D board.
With the MSTARV7 thing fixed if deemed necessary:
Acked-by: Daniel Palmer <daniel@thingy.jp>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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