[PATCH V3 0/6] Migrate IMX8, IMX8M and IMX9 to use imx8_cpu

[PATCH V3 0/6] Migrate IMX8, IMX8M and IMX9 to use imx8_cpu

[Adam Ford]

The imx8_cpu driver uses the driver model to represent the processor
cores in the dm tree as well as display the processor type and speed
on boot.  Currently, the imx8_cpu driver only displays the temperature
grade of the processor if the processor is IMX9, so in order to display
that info, the check in imx8_cpu is changed to check for IMX_TMU
and IMX_TMU is implied for IMX8, IMX8M and IMX9 SoC familes.  If
users want to fall back to the older method to display the SoC type
or remove the temperature grade information, they can.  Doing this
at the SoC family level reduces the number of duplicated config options
for each board, and was done at the request of the IMX U-Boot custodian.

Any testing on an i.MX8Q or i.MX9 would be appreciated as I don't have
a board that runs either of these platforms.

V3:  Added the imply IMX_TMU for the 8M family and added the imply for
     CPU and CPU_IMX to IMX8, IMX8M and IMX9 families

V2:  Changed the check in imx8_cpu to drop the IMX9 check and instead
     imply IMX_TMU in the IMX9 family


Adam Ford (6):
  imx: imx9: Imply IMX_TMU
  imx: imx8m: Imply IMX_TMU
  cpu: imx8_cpu: Print Speed grade if IMX_THERMAL or IMX_TMU
  imx: imx8m: Imply CPU_IMX by default
  imx: imx8: Imply CPU_IMX by default
  imx: imx9: Imply CPU_IMX by default

 arch/arm/mach-imx/imx8/Kconfig  | 2 ++
 arch/arm/mach-imx/imx8m/Kconfig | 4 ++++
 arch/arm/mach-imx/imx9/Kconfig  | 3 +++
 drivers/cpu/imx8_cpu.c          | 2 +-
 4 files changed, 10 insertions(+), 1 deletion(-)

-- 
2.45.2

[PATCH V3 1/6] imx: imx9: Imply IMX_TMU

[Adam Ford]

If the CPU Information is displayed from imx8_cpu, it displays
the cpu temperature grade and operating temperature if
CONFIG_IMX9 is defined. This behavior is similar to what
happens arch/arm/mach-imx/cpu.c except that the latter
checks for CONFIG_IMX_THERMAL or CONFIG_IMX_TMU.
In preparation to make imx8_cpu act like the previous
implementation for any CPU, make IMX9 imply IMX_TMU, so
it will be always displayed unless a user decides to
disable it.

Signed-off-by: Adam Ford <aford173@gmail.com>
---
 arch/arm/mach-imx/imx9/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-imx/imx9/Kconfig b/arch/arm/mach-imx/imx9/Kconfig
index 49220c0955e..c3e758e103a 100644
--- a/arch/arm/mach-imx/imx9/Kconfig
+++ b/arch/arm/mach-imx/imx9/Kconfig
@@ -10,6 +10,7 @@ config IMX9
 	select BINMAN
 	select HAS_CAAM
 	select ROM_UNIFIED_SECTIONS
+	imply IMX_TMU
 
 config IMX93
 	bool
-- 
2.45.2

Re: [PATCH V3 1/6] imx: imx9: Imply IMX_TMU

[Marek Vasut]

On 3/22/25 7:38 PM, Adam Ford wrote:
> If the CPU Information is displayed from imx8_cpu, it displays
> the cpu temperature grade and operating temperature if
> CONFIG_IMX9 is defined. This behavior is similar to what
> happens arch/arm/mach-imx/cpu.c except that the latter
> checks for CONFIG_IMX_THERMAL or CONFIG_IMX_TMU.
> In preparation to make imx8_cpu act like the previous
> implementation for any CPU, make IMX9 imply IMX_TMU, so
> it will be always displayed unless a user decides to
> disable it.
> 
> Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

[PATCH V3 2/6] imx: imx8m: Imply IMX_TMU

[Adam Ford]

If the CPU Information is displayed from imx8_cpu, it displays the
cpu temperature grade and operating temperature if CONFIG_IMX9 is
defined. This behavior is similar to what happens mach-imx/cpu.c,
except that the latter checks for IMX_THERMAL or IMX_TMU.

In preparation to make imx8_cpu act like the previous implementation
for any CPU, make IMX8M imply IMX_TMU so it will be always displayed
unless a user decides to disable it.

Signed-off-by: Adam Ford <aford173@gmail.com>
---
 arch/arm/mach-imx/imx8m/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-imx/imx8m/Kconfig b/arch/arm/mach-imx/imx8m/Kconfig
index 89f2b50c8a2..8ee699a343c 100644
--- a/arch/arm/mach-imx/imx8m/Kconfig
+++ b/arch/arm/mach-imx/imx8m/Kconfig
@@ -8,6 +8,7 @@ config IMX8M
 	select LTO
 	select ROM_UNIFIED_SECTIONS
 	select ARMV8_CRYPTO
+	imply IMX_TMU
 
 config IMX8MQ
 	bool
-- 
2.45.2

Re: [PATCH V3 2/6] imx: imx8m: Imply IMX_TMU

[Marek Vasut]

On 3/22/25 7:38 PM, Adam Ford wrote:
> If the CPU Information is displayed from imx8_cpu, it displays the
> cpu temperature grade and operating temperature if CONFIG_IMX9 is
> defined. This behavior is similar to what happens mach-imx/cpu.c,
> except that the latter checks for IMX_THERMAL or IMX_TMU.
> 
> In preparation to make imx8_cpu act like the previous implementation
> for any CPU, make IMX8M imply IMX_TMU so it will be always displayed
> unless a user decides to disable it.
> 
> Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

[PATCH V3 3/6] cpu: imx8_cpu: Print Speed grade if IMX_THERMAL or IMX_TMU

[Adam Ford]

Much of the data that is display by imx8_cpu.c is also displayed from
arch/arm/mach-imx/cpu.c, except the temperature grade and active
temperature are only displayed when SoC is an i.MX9. Since IMX9 now
implies IMX_TMU, change this to check for IMX_THERMAL or IMX_TMU
in the same way it's done in mach-imx/cpu.c to enable displaying
this information for any SoC with either of these configs enabled.

Before:
CPU:   NXP i.MX8MP Rev1.1 A53 at 1200 MHz
Model: Beacon EmbeddedWorks i.MX8MPlus Development kit

After:
CPU:   NXP i.MX8MP Rev1.1 A53 at 1200 MHz
CPU:   Industrial temperature grade  (-40C to 105C) at 28C
Model: Beacon EmbeddedWorks i.MX8MPlus Development kit

Signed-off-by: Adam Ford <aford173@gmail.com>
---
 drivers/cpu/imx8_cpu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cpu/imx8_cpu.c b/drivers/cpu/imx8_cpu.c
index 53d31b3c0bf..faa6a0704a6 100644
--- a/drivers/cpu/imx8_cpu.c
+++ b/drivers/cpu/imx8_cpu.c
@@ -177,7 +177,7 @@ static int cpu_imx_get_desc(const struct udevice *dev, char *buf, int size)
 	ret = snprintf(buf, size, "NXP i.MX%s Rev%s %s at %u MHz",
 		       plat->type, plat->rev, plat->name, plat->freq_mhz);
 
-	if (IS_ENABLED(CONFIG_IMX9)) {
+	if (IS_ENABLED(CONFIG_IMX_THERMAL) || IS_ENABLED(CONFIG_IMX_TMU)) {
 		switch (get_cpu_temp_grade(&minc, &maxc)) {
 		case TEMP_AUTOMOTIVE:
 			grade = "Automotive temperature grade ";
-- 
2.45.2

Re: [PATCH V3 3/6] cpu: imx8_cpu: Print Speed grade if IMX_THERMAL or IMX_TMU

[Marek Vasut]

On 3/22/25 7:38 PM, Adam Ford wrote:
> Much of the data that is display by imx8_cpu.c is also displayed from
> arch/arm/mach-imx/cpu.c, except the temperature grade and active
> temperature are only displayed when SoC is an i.MX9. Since IMX9 now
> implies IMX_TMU, change this to check for IMX_THERMAL or IMX_TMU
> in the same way it's done in mach-imx/cpu.c to enable displaying
> this information for any SoC with either of these configs enabled.
> 
> Before:
> CPU:   NXP i.MX8MP Rev1.1 A53 at 1200 MHz
> Model: Beacon EmbeddedWorks i.MX8MPlus Development kit
> 
> After:
> CPU:   NXP i.MX8MP Rev1.1 A53 at 1200 MHz
> CPU:   Industrial temperature grade  (-40C to 105C) at 28C
There is an extra space after 'grade' , please fix.

Re: [PATCH V3 3/6] cpu: imx8_cpu: Print Speed grade if IMX_THERMAL or IMX_TMU

[Adam Ford]

On Sat, Mar 22, 2025 at 6:31 PM Marek Vasut <marek.vasut@mailbox.org> wrote:
>
> On 3/22/25 7:38 PM, Adam Ford wrote:
> > Much of the data that is display by imx8_cpu.c is also displayed from
> > arch/arm/mach-imx/cpu.c, except the temperature grade and active
> > temperature are only displayed when SoC is an i.MX9. Since IMX9 now
> > implies IMX_TMU, change this to check for IMX_THERMAL or IMX_TMU
> > in the same way it's done in mach-imx/cpu.c to enable displaying
> > this information for any SoC with either of these configs enabled.
> >
> > Before:
> > CPU:   NXP i.MX8MP Rev1.1 A53 at 1200 MHz
> > Model: Beacon EmbeddedWorks i.MX8MPlus Development kit
> >
> > After:
> > CPU:   NXP i.MX8MP Rev1.1 A53 at 1200 MHz
> > CPU:   Industrial temperature grade  (-40C to 105C) at 28C
> There is an extra space after 'grade' , please fix.

No problem.  Should that be its own patch, or can I roll the
whitespace change with the #ifdef change?  Normally, I like to keep
them separate, but it seems silly to me to make a patch solely for a
1-character whitespace change.

adam

Re: [PATCH V3 3/6] cpu: imx8_cpu: Print Speed grade if IMX_THERMAL or IMX_TMU

[Marek Vasut]

On 3/23/25 1:03 AM, Adam Ford wrote:
> On Sat, Mar 22, 2025 at 6:31 PM Marek Vasut <marek.vasut@mailbox.org> wrote:
>>
>> On 3/22/25 7:38 PM, Adam Ford wrote:
>>> Much of the data that is display by imx8_cpu.c is also displayed from
>>> arch/arm/mach-imx/cpu.c, except the temperature grade and active
>>> temperature are only displayed when SoC is an i.MX9. Since IMX9 now
>>> implies IMX_TMU, change this to check for IMX_THERMAL or IMX_TMU
>>> in the same way it's done in mach-imx/cpu.c to enable displaying
>>> this information for any SoC with either of these configs enabled.
>>>
>>> Before:
>>> CPU:   NXP i.MX8MP Rev1.1 A53 at 1200 MHz
>>> Model: Beacon EmbeddedWorks i.MX8MPlus Development kit
>>>
>>> After:
>>> CPU:   NXP i.MX8MP Rev1.1 A53 at 1200 MHz
>>> CPU:   Industrial temperature grade  (-40C to 105C) at 28C
>> There is an extra space after 'grade' , please fix.
> 
> No problem.  Should that be its own patch, or can I roll the
> whitespace change with the #ifdef change?  Normally, I like to keep
> them separate, but it seems silly to me to make a patch solely for a
> 1-character whitespace change.
Either way works for me, as long as it gets fixed. Thanks !

[PATCH V3 4/6] imx: imx8m: Imply CPU_IMX by default

[Adam Ford]

The imx8_cpu driver is a CPU Driver that supports the i.MX8M
family, and when it is enabled, it acts as an alternative to
arch/arm/mach-imx/cpu.c, but the imx8_cpu supports the driver
model where cpu.c does not.  Imply this newer driver by default.

Signed-off-by: Adam Ford <aford173@gmail.com>
---
 arch/arm/mach-imx/imx8m/Kconfig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/mach-imx/imx8m/Kconfig b/arch/arm/mach-imx/imx8m/Kconfig
index 8ee699a343c..988495d217a 100644
--- a/arch/arm/mach-imx/imx8m/Kconfig
+++ b/arch/arm/mach-imx/imx8m/Kconfig
@@ -9,6 +9,8 @@ config IMX8M
 	select ROM_UNIFIED_SECTIONS
 	select ARMV8_CRYPTO
 	imply IMX_TMU
+	imply CPU
+	imply CPU_IMX
 
 config IMX8MQ
 	bool
-- 
2.45.2

Re: [PATCH V3 4/6] imx: imx8m: Imply CPU_IMX by default

[Marek Vasut]

On 3/22/25 7:38 PM, Adam Ford wrote:
> The imx8_cpu driver is a CPU Driver that supports the i.MX8M
> family, and when it is enabled, it acts as an alternative to
> arch/arm/mach-imx/cpu.c, but the imx8_cpu supports the driver
> model where cpu.c does not.  Imply this newer driver by default.
> 
> Signed-off-by: Adam Ford <aford173@gmail.com>
> ---
>   arch/arm/mach-imx/imx8m/Kconfig | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm/mach-imx/imx8m/Kconfig b/arch/arm/mach-imx/imx8m/Kconfig
> index 8ee699a343c..988495d217a 100644
> --- a/arch/arm/mach-imx/imx8m/Kconfig
> +++ b/arch/arm/mach-imx/imx8m/Kconfig
> @@ -9,6 +9,8 @@ config IMX8M
>   	select ROM_UNIFIED_SECTIONS
>   	select ARMV8_CRYPTO
>   	imply IMX_TMU
> +	imply CPU
> +	imply CPU_IMX

Keep the list sorted .

[PATCH V3 5/6] imx: imx8: Imply CPU_IMX by default

[Adam Ford]

The imx8_cpu driver is a CPU Driver that supports the i.MX8Q
family. When it is enabled, it acts as an alternative to
arch/arm/mach-imx/cpu.c, but the imx8_cpu supports the driver
model where cpu.c does not.  Imply this newer driver by default.

Signed-off-by: Adam Ford <aford173@gmail.com>
---
 arch/arm/mach-imx/imx8/Kconfig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/mach-imx/imx8/Kconfig b/arch/arm/mach-imx/imx8/Kconfig
index 9a43beda6fa..257c14e61b6 100644
--- a/arch/arm/mach-imx/imx8/Kconfig
+++ b/arch/arm/mach-imx/imx8/Kconfig
@@ -9,6 +9,8 @@ config AHAB_BOOT
 config IMX8
 	bool
 	select HAS_CAAM
+	imply CPU
+	imply CPU_IMX
 
 config MU_BASE_SPL
 	hex "MU base address used in SPL"
-- 
2.45.2

Re: [PATCH V3 5/6] imx: imx8: Imply CPU_IMX by default

[Marek Vasut]

On 3/22/25 7:38 PM, Adam Ford wrote:
> The imx8_cpu driver is a CPU Driver that supports the i.MX8Q
> family. When it is enabled, it acts as an alternative to
> arch/arm/mach-imx/cpu.c, but the imx8_cpu supports the driver
> model where cpu.c does not.  Imply this newer driver by default.
> 
> Signed-off-by: Adam Ford <aford173@gmail.com>
> ---
>   arch/arm/mach-imx/imx8/Kconfig | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm/mach-imx/imx8/Kconfig b/arch/arm/mach-imx/imx8/Kconfig
> index 9a43beda6fa..257c14e61b6 100644
> --- a/arch/arm/mach-imx/imx8/Kconfig
> +++ b/arch/arm/mach-imx/imx8/Kconfig
> @@ -9,6 +9,8 @@ config AHAB_BOOT
>   config IMX8
>   	bool
>   	select HAS_CAAM
> +	imply CPU
> +	imply CPU_IMX
Shouldn't CPU_IMX select CPU ?

Re: [PATCH V3 5/6] imx: imx8: Imply CPU_IMX by default

[Adam Ford]

On Sat, Mar 22, 2025 at 6:31 PM Marek Vasut <marek.vasut@mailbox.org> wrote:
>
> On 3/22/25 7:38 PM, Adam Ford wrote:
> > The imx8_cpu driver is a CPU Driver that supports the i.MX8Q
> > family. When it is enabled, it acts as an alternative to
> > arch/arm/mach-imx/cpu.c, but the imx8_cpu supports the driver
> > model where cpu.c does not.  Imply this newer driver by default.
> >
> > Signed-off-by: Adam Ford <aford173@gmail.com>
> > ---
> >   arch/arm/mach-imx/imx8/Kconfig | 2 ++
> >   1 file changed, 2 insertions(+)
> >
> > diff --git a/arch/arm/mach-imx/imx8/Kconfig b/arch/arm/mach-imx/imx8/Kconfig
> > index 9a43beda6fa..257c14e61b6 100644
> > --- a/arch/arm/mach-imx/imx8/Kconfig
> > +++ b/arch/arm/mach-imx/imx8/Kconfig
> > @@ -9,6 +9,8 @@ config AHAB_BOOT
> >   config IMX8
> >       bool
> >       select HAS_CAAM
> > +     imply CPU
> > +     imply CPU_IMX
> Shouldn't CPU_IMX select CPU ?

It does not currently.  Right now, it depends on CPU being set.  There
is another Kconfig option for CPU_ARMV8 that also depends on CPU, and
I would prefer not to change both of them.

adam

Re: [PATCH V3 5/6] imx: imx8: Imply CPU_IMX by default

[Marek Vasut]

On 3/23/25 1:00 AM, Adam Ford wrote:
> On Sat, Mar 22, 2025 at 6:31 PM Marek Vasut <marek.vasut@mailbox.org> wrote:
>>
>> On 3/22/25 7:38 PM, Adam Ford wrote:
>>> The imx8_cpu driver is a CPU Driver that supports the i.MX8Q
>>> family. When it is enabled, it acts as an alternative to
>>> arch/arm/mach-imx/cpu.c, but the imx8_cpu supports the driver
>>> model where cpu.c does not.  Imply this newer driver by default.
>>>
>>> Signed-off-by: Adam Ford <aford173@gmail.com>
>>> ---
>>>    arch/arm/mach-imx/imx8/Kconfig | 2 ++
>>>    1 file changed, 2 insertions(+)
>>>
>>> diff --git a/arch/arm/mach-imx/imx8/Kconfig b/arch/arm/mach-imx/imx8/Kconfig
>>> index 9a43beda6fa..257c14e61b6 100644
>>> --- a/arch/arm/mach-imx/imx8/Kconfig
>>> +++ b/arch/arm/mach-imx/imx8/Kconfig
>>> @@ -9,6 +9,8 @@ config AHAB_BOOT
>>>    config IMX8
>>>        bool
>>>        select HAS_CAAM
>>> +     imply CPU
>>> +     imply CPU_IMX
>> Shouldn't CPU_IMX select CPU ?
> 
> It does not currently.  Right now, it depends on CPU being set.  There
> is another Kconfig option for CPU_ARMV8 that also depends on CPU, and
> I would prefer not to change both of them.
Hum, OK, thanks for clarifying.

[PATCH V3 6/6] imx: imx9: Imply CPU_IMX by default

[Adam Ford]

The imx8_cpu driver is a CPU Driver that supports the i.MX9
family. When it is enabled, it acts as an alternative to
arch/arm/mach-imx/cpu.c, but the imx8_cpu supports the driver
model where cpu.c does not.  Imply this newer driver by default.

Signed-off-by: Adam Ford <aford173@gmail.com>
---
 arch/arm/mach-imx/imx9/Kconfig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/mach-imx/imx9/Kconfig b/arch/arm/mach-imx/imx9/Kconfig
index c3e758e103a..579432a47fa 100644
--- a/arch/arm/mach-imx/imx9/Kconfig
+++ b/arch/arm/mach-imx/imx9/Kconfig
@@ -11,6 +11,8 @@ config IMX9
 	select HAS_CAAM
 	select ROM_UNIFIED_SECTIONS
 	imply IMX_TMU
+	imply CPU
+	imply CPU_IMX
 
 config IMX93
 	bool
-- 
2.45.2

Re: [PATCH V3 6/6] imx: imx9: Imply CPU_IMX by default

[Marek Vasut]

On 3/22/25 7:38 PM, Adam Ford wrote:
> The imx8_cpu driver is a CPU Driver that supports the i.MX9
> family. When it is enabled, it acts as an alternative to
> arch/arm/mach-imx/cpu.c, but the imx8_cpu supports the driver
> model where cpu.c does not.  Imply this newer driver by default.
> 
> Signed-off-by: Adam Ford <aford173@gmail.com>
> ---
>   arch/arm/mach-imx/imx9/Kconfig | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm/mach-imx/imx9/Kconfig b/arch/arm/mach-imx/imx9/Kconfig
> index c3e758e103a..579432a47fa 100644
> --- a/arch/arm/mach-imx/imx9/Kconfig
> +++ b/arch/arm/mach-imx/imx9/Kconfig
> @@ -11,6 +11,8 @@ config IMX9
>   	select HAS_CAAM
>   	select ROM_UNIFIED_SECTIONS
>   	imply IMX_TMU
> +	imply CPU
> +	imply CPU_IMX
Keep the list sorted.