diff mbox

[v1,4/4] ARM: debug: qcom: Add APQ8084 DEBUG_LL UART support

Message ID 1400684225-21381-5-git-send-email-gdjakov@mm-sol.com (mailing list archive)
State Changes Requested
Headers show

Commit Message

Georgi Djakov May 21, 2014, 2:57 p.m. UTC
Add debug UART support for Qualcomm APQ8084 SoC. This patch
adds a Kconfig entry and the base address of the debug UART.

Signed-off-by: Georgi Djakov <gdjakov@mm-sol.com>
---
 arch/arm/Kconfig.debug       |    9 +++++++++
 arch/arm/include/debug/msm.S |    5 +++++
 2 files changed, 14 insertions(+)

Comments

Arnd Bergmann May 21, 2014, 3:18 p.m. UTC | #1
On Wednesday 21 May 2014 17:57:05 Georgi Djakov wrote:
> 
> diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
> index eab8ecb..91d5184 100644
> --- a/arch/arm/Kconfig.debug
> +++ b/arch/arm/Kconfig.debug
> @@ -101,6 +101,15 @@ choice
>                 bool "Kernel low-level debugging on 9263 and 9g45"
>                 depends on HAVE_AT91_DBGU1
>  
> +       config DEBUG_APQ8084_UART
> +               bool "Kernel low-level debugging messages via APQ8084 UART"
> +               depends on ARCH_QCOM
> +               select MSM_HAS_DEBUG_UART_HS
> +               select DEBUG_MSM_UART
> +               help
> +                 Say Y here if you want the debug print routines to direct
> +                 their output to the serial port on Qualcomm APQ8084 devices.
> +
>         config DEBUG_BCM2835
>                 bool "Kernel low-level debugging on BCM2835 PL011 UART"
>                 depends on ARCH_BCM2835
> diff --git a/arch/arm/include/debug/msm.S b/arch/arm/include/debug/msm.S
> index 9d653d4..178636d 100644
> --- a/arch/arm/include/debug/msm.S
> +++ b/arch/arm/include/debug/msm.S
> @@ -36,6 +36,11 @@
>  #define MSM_DEBUG_UART_PHYS    MSM_UART3_PHYS
>  #endif
>  
> +#ifdef CONFIG_DEBUG_APQ8084_UART
> +#define MSM_DEBUG_UART_BASE    0xFA75E000
> +#define MSM_DEBUG_UART_PHYS    0xF995E000
> +#endif
> +
>  #ifdef CONFIG_DEBUG_MSM8660_UART
>  #define MSM_DEBUG_UART_BASE    0xF0040000
>  #define MSM_DEBUG_UART_PHYS    0x19C40000
> 

Maybe we should move debug/msm.S over to use
CONFIG_DEBUG_UART_PHYS/CONFIG_DEBUG_UART_VIRT now?

	Arnd
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Ivan T. Ivanov May 21, 2014, 3:28 p.m. UTC | #2
Hi, 

On Wed, 2014-05-21 at 17:18 +0200, Arnd Bergmann wrote:
> On Wednesday 21 May 2014 17:57:05 Georgi Djakov wrote:

> >  
> > +#ifdef CONFIG_DEBUG_APQ8084_UART
> > +#define MSM_DEBUG_UART_BASE    0xFA75E000
> > +#define MSM_DEBUG_UART_PHYS    0xF995E000
> > +#endif
> > +

> Maybe we should move debug/msm.S over to use
> CONFIG_DEBUG_UART_PHYS/CONFIG_DEBUG_UART_VIRT now?
> 

There is patch which do this [1]. It was reviewed 
by Stephen Boyd [2].

Regards,
Ivan


[1] https://lkml.org/lkml/2014/4/14/312
[2] https://lkml.org/lkml/2014/4/14/542



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Kumar Gala May 21, 2014, 7:14 p.m. UTC | #3
On May 21, 2014, at 10:28 AM, Ivan T. Ivanov <iivanov@mm-sol.com> wrote:

> Hi, 
> 
> On Wed, 2014-05-21 at 17:18 +0200, Arnd Bergmann wrote:
>> On Wednesday 21 May 2014 17:57:05 Georgi Djakov wrote:
> 
>>> 
>>> +#ifdef CONFIG_DEBUG_APQ8084_UART
>>> +#define MSM_DEBUG_UART_BASE    0xFA75E000
>>> +#define MSM_DEBUG_UART_PHYS    0xF995E000
>>> +#endif
>>> +
> 
>> Maybe we should move debug/msm.S over to use
>> CONFIG_DEBUG_UART_PHYS/CONFIG_DEBUG_UART_VIRT now?
>> 
> 
> There is patch which do this [1]. It was reviewed 
> by Stephen Boyd [2].
> 
> Regards,
> Ivan
> 
> 
> [1] https://lkml.org/lkml/2014/4/14/312
> [2] https://lkml.org/lkml/2014/4/14/542

I’ll grab Ivan’s patch and send via my qcom tree to arm-soc.

- k
diff mbox

Patch

diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index eab8ecb..91d5184 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -101,6 +101,15 @@  choice
 		bool "Kernel low-level debugging on 9263 and 9g45"
 		depends on HAVE_AT91_DBGU1
 
+	config DEBUG_APQ8084_UART
+		bool "Kernel low-level debugging messages via APQ8084 UART"
+		depends on ARCH_QCOM
+		select MSM_HAS_DEBUG_UART_HS
+		select DEBUG_MSM_UART
+		help
+		  Say Y here if you want the debug print routines to direct
+		  their output to the serial port on Qualcomm APQ8084 devices.
+
 	config DEBUG_BCM2835
 		bool "Kernel low-level debugging on BCM2835 PL011 UART"
 		depends on ARCH_BCM2835
diff --git a/arch/arm/include/debug/msm.S b/arch/arm/include/debug/msm.S
index 9d653d4..178636d 100644
--- a/arch/arm/include/debug/msm.S
+++ b/arch/arm/include/debug/msm.S
@@ -36,6 +36,11 @@ 
 #define MSM_DEBUG_UART_PHYS	MSM_UART3_PHYS
 #endif
 
+#ifdef CONFIG_DEBUG_APQ8084_UART
+#define MSM_DEBUG_UART_BASE	0xFA75E000
+#define MSM_DEBUG_UART_PHYS	0xF995E000
+#endif
+
 #ifdef CONFIG_DEBUG_MSM8660_UART
 #define MSM_DEBUG_UART_BASE	0xF0040000
 #define MSM_DEBUG_UART_PHYS	0x19C40000