[PATCH] pinctrl: ingenic: Add the X1600's 32 kHz clock output

[PATCH] pinctrl: ingenic: Add the X1600's 32 kHz clock output

[Olivier Louvignes]

PC26's function 0 puts out the RTC's 32 kHz clock. The vendor device
tree calls that pin setting "rtc32k-enable" (function 5 is its
"rtc32k-disable"). Add an "rtc32k" group and function for it.

Used on a HiBy R1, whose Bluetooth chip takes it as its sleep clock: on
a cold boot without it the chip does not answer its reset, with it the
chip comes up. The clock on the pin was not measured.

Signed-off-by: Olivier Louvignes <olivier@mgcrea.io>
---
 drivers/pinctrl/pinctrl-ingenic.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-ingenic.c b/drivers/pinctrl/pinctrl-ingenic.c
index 1aa6a6dc1209..ac6e2a152bdd 100644
--- a/drivers/pinctrl/pinctrl-ingenic.c
+++ b/drivers/pinctrl/pinctrl-ingenic.c
@@ -2452,6 +2452,7 @@ static int x1600_pwm_pwm6_b20_pins[] = { 0x34, };
 static int x1600_pwm_pwm7_b10_pins[] = { 0x2a, };
 static int x1600_pwm_pwm7_b21_pins[] = { 0x35, };
 
+static int x1600_rtc32k_pins[] = { 0x5a, };
 static int x1600_mac_pins[] = {
 	0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c,
 };
@@ -2511,6 +2512,7 @@ static const struct group_desc x1600_groups[] = {
 	INGENIC_PIN_GROUP("pwm7-b10", x1600_pwm_pwm7_b10, 1),
 	INGENIC_PIN_GROUP("pwm7-b21", x1600_pwm_pwm7_b21, 2),
 	INGENIC_PIN_GROUP("mac", x1600_mac, 1),
+	INGENIC_PIN_GROUP("rtc32k", x1600_rtc32k, 0),
 };
 
 static const char * const x1600_uart0_groups[] = { "uart0-data", "uart0-hwflow", };
@@ -2557,6 +2559,7 @@ static const char * const x1600_pwm6_groups[] = { "pwm6-b9", "pwm6-b20", };
 static const char * const x1600_pwm7_groups[] = { "pwm7-b10", "pwm7-b21", };
 
 static const char * const x1600_mac_groups[] = { "mac", };
+static const char * const x1600_rtc32k_groups[] = { "rtc32k", };
 
 static const struct pinfunction x1600_functions[] = {
 	INGENIC_PIN_FUNCTION("uart0", x1600_uart0),
@@ -2581,6 +2584,7 @@ static const struct pinfunction x1600_functions[] = {
 	INGENIC_PIN_FUNCTION("pwm6", x1600_pwm6),
 	INGENIC_PIN_FUNCTION("pwm7", x1600_pwm7),
 	INGENIC_PIN_FUNCTION("mac", x1600_mac),
+	INGENIC_PIN_FUNCTION("rtc32k", x1600_rtc32k),
 };
 
 static const struct ingenic_chip_info x1600_chip_info = {

base-commit: f33a24cc012d34f25bb9942681bd478a1757b806
-- 
2.39.5

Re: [PATCH] pinctrl: ingenic: Add the X1600's 32 kHz clock output

[H. Nikolaus Schaller]

Hi,

> Am 24.10.2026 um 07:16 schrieb Olivier Louvignes <olivier@mgcrea.io>:
> 
> PC26's function 0 puts out the RTC's 32 kHz clock. The vendor device
> tree calls that pin setting "rtc32k-enable" (function 5 is its
> "rtc32k-disable"). Add an "rtc32k" group and function for it.
> 
> Used on a HiBy R1, whose Bluetooth chip takes it as its sleep clock: on
> a cold boot without it the chip does not answer its reset, with it the
> chip comes up. The clock on the pin was not measured.
> 
> Signed-off-by: Olivier Louvignes <olivier@mgcrea.io>
> ---
> drivers/pinctrl/pinctrl-ingenic.c | 4 ++++
> 1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/pinctrl/pinctrl-ingenic.c b/drivers/pinctrl/pinctrl-ingenic.c
> index 1aa6a6dc1209..ac6e2a152bdd 100644
> --- a/drivers/pinctrl/pinctrl-ingenic.c
> +++ b/drivers/pinctrl/pinctrl-ingenic.c
> @@ -2452,6 +2452,7 @@ static int x1600_pwm_pwm6_b20_pins[] = { 0x34, };
> static int x1600_pwm_pwm7_b10_pins[] = { 0x2a, };
> static int x1600_pwm_pwm7_b21_pins[] = { 0x35, };
> 
> +static int x1600_rtc32k_pins[] = { 0x5a, };

Yes, is PC26.

> static int x1600_mac_pins[] = {
> 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c,
> };
> @@ -2511,6 +2512,7 @@ static const struct group_desc x1600_groups[] = {
> INGENIC_PIN_GROUP("pwm7-b10", x1600_pwm_pwm7_b10, 1),
> INGENIC_PIN_GROUP("pwm7-b21", x1600_pwm_pwm7_b21, 2),
> INGENIC_PIN_GROUP("mac", x1600_mac, 1),
> + INGENIC_PIN_GROUP("rtc32k", x1600_rtc32k, 0),

Yes, it is on Function 0.

> };
> 
> static const char * const x1600_uart0_groups[] = { "uart0-data", "uart0-hwflow", };
> @@ -2557,6 +2559,7 @@ static const char * const x1600_pwm6_groups[] = { "pwm6-b9", "pwm6-b20", };
> static const char * const x1600_pwm7_groups[] = { "pwm7-b10", "pwm7-b21", };
> 
> static const char * const x1600_mac_groups[] = { "mac", };
> +static const char * const x1600_rtc32k_groups[] = { "rtc32k", };
> 
> static const struct pinfunction x1600_functions[] = {
> INGENIC_PIN_FUNCTION("uart0", x1600_uart0),
> @@ -2581,6 +2584,7 @@ static const struct pinfunction x1600_functions[] = {
> INGENIC_PIN_FUNCTION("pwm6", x1600_pwm6),
> INGENIC_PIN_FUNCTION("pwm7", x1600_pwm7),
> INGENIC_PIN_FUNCTION("mac", x1600_mac),
> + INGENIC_PIN_FUNCTION("rtc32k", x1600_rtc32k),
> };
> 
> static const struct ingenic_chip_info x1600_chip_info = {
> 
> base-commit: f33a24cc012d34f25bb9942681bd478a1757b806
> -- 
> 2.39.5
> 
> 

Reviewed-By: H. Nikolaus Schaller <hns@goldelico.com>

Re: [PATCH] pinctrl: ingenic: Add the X1600's 32 kHz clock output

[Paul Cercueil]

Hi Olivier,

Le samedi 24 octobre 2026 à 07:16 +0200, Olivier Louvignes a écrit :
> PC26's function 0 puts out the RTC's 32 kHz clock. The vendor device
> tree calls that pin setting "rtc32k-enable" (function 5 is its
> "rtc32k-disable"). Add an "rtc32k" group and function for it.
> 
> Used on a HiBy R1, whose Bluetooth chip takes it as its sleep clock:
> on
> a cold boot without it the chip does not answer its reset, with it
> the
> chip comes up. The clock on the pin was not measured.
> 
> Signed-off-by: Olivier Louvignes <olivier@mgcrea.io>

You're making two patch series in parallel to the same driver, that
both add pin groups for the JZ4760? Next time consider grouping them
into the same series.

Anyway, this patch looks OK.

Reviewed-by: Paul Cercueil <paul@crapouillou.net>

Cheers,
-Paul

> ---
>  drivers/pinctrl/pinctrl-ingenic.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/pinctrl/pinctrl-ingenic.c
> b/drivers/pinctrl/pinctrl-ingenic.c
> index 1aa6a6dc1209..ac6e2a152bdd 100644
> --- a/drivers/pinctrl/pinctrl-ingenic.c
> +++ b/drivers/pinctrl/pinctrl-ingenic.c
> @@ -2452,6 +2452,7 @@ static int x1600_pwm_pwm6_b20_pins[] = { 0x34,
> };
>  static int x1600_pwm_pwm7_b10_pins[] = { 0x2a, };
>  static int x1600_pwm_pwm7_b21_pins[] = { 0x35, };
>  
> +static int x1600_rtc32k_pins[] = { 0x5a, };
>  static int x1600_mac_pins[] = {
>  	0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c,
>  };
> @@ -2511,6 +2512,7 @@ static const struct group_desc x1600_groups[] =
> {
>  	INGENIC_PIN_GROUP("pwm7-b10", x1600_pwm_pwm7_b10, 1),
>  	INGENIC_PIN_GROUP("pwm7-b21", x1600_pwm_pwm7_b21, 2),
>  	INGENIC_PIN_GROUP("mac", x1600_mac, 1),
> +	INGENIC_PIN_GROUP("rtc32k", x1600_rtc32k, 0),
>  };
>  
>  static const char * const x1600_uart0_groups[] = { "uart0-data",
> "uart0-hwflow", };
> @@ -2557,6 +2559,7 @@ static const char * const x1600_pwm6_groups[] =
> { "pwm6-b9", "pwm6-b20", };
>  static const char * const x1600_pwm7_groups[] = { "pwm7-b10", "pwm7-
> b21", };
>  
>  static const char * const x1600_mac_groups[] = { "mac", };
> +static const char * const x1600_rtc32k_groups[] = { "rtc32k", };
>  
>  static const struct pinfunction x1600_functions[] = {
>  	INGENIC_PIN_FUNCTION("uart0", x1600_uart0),
> @@ -2581,6 +2584,7 @@ static const struct pinfunction
> x1600_functions[] = {
>  	INGENIC_PIN_FUNCTION("pwm6", x1600_pwm6),
>  	INGENIC_PIN_FUNCTION("pwm7", x1600_pwm7),
>  	INGENIC_PIN_FUNCTION("mac", x1600_mac),
> +	INGENIC_PIN_FUNCTION("rtc32k", x1600_rtc32k),
>  };
>  
>  static const struct ingenic_chip_info x1600_chip_info = {
> 
> base-commit: f33a24cc012d34f25bb9942681bd478a1757b806

Re: [PATCH] pinctrl: ingenic: Add the X1600's 32 kHz clock output

[Linus Walleij]

On Sat, Oct 24, 2026 at 7:17 AM Olivier Louvignes <olivier@mgcrea.io> wrote:

> PC26's function 0 puts out the RTC's 32 kHz clock. The vendor device
> tree calls that pin setting "rtc32k-enable" (function 5 is its
> "rtc32k-disable"). Add an "rtc32k" group and function for it.
>
> Used on a HiBy R1, whose Bluetooth chip takes it as its sleep clock: on
> a cold boot without it the chip does not answer its reset, with it the
> chip comes up. The clock on the pin was not measured.
>
> Signed-off-by: Olivier Louvignes <olivier@mgcrea.io>

Patch applied!

Yours,
Linus Walleij