* [PATCH V2 1/2] arm64: dts: imx8mm-beacon-som: Configure RTC aliases
@ 2020-11-26 10:45 Adam Ford
2020-11-26 10:45 ` [PATCH V2 2/2] arm64: dts: imx8mm-beacon-som: Assign PMIC clock Adam Ford
2020-12-01 1:50 ` [PATCH V2 1/2] arm64: dts: imx8mm-beacon-som: Configure RTC aliases Shawn Guo
0 siblings, 2 replies; 3+ messages in thread
From: Adam Ford @ 2020-11-26 10:45 UTC (permalink / raw)
To: linux-arm-kernel
Cc: devicetree, Fabio Estevam, Adam Ford, Sascha Hauer, aford,
linux-kernel, Rob Herring, NXP Linux Team,
Pengutronix Kernel Team, Shawn Guo
On the i.MX8MM Beacon SOM, there is an RTC chip which is fed power
from the baseboard during power off. The SNVS RTC integrated into
the SoC is not fed power. Depending on the order the modules are
loaded, this can be a problem if the external RTC isn't rtc0.
Make the alias for rtc0 point to the external RTC all the time and
rtc1 point to the SVNS in order to correctly hold date/time over
a power-cycle.
Signed-off-by: Adam Ford <aford173@gmail.com>
---
V2: Remove fixes tag
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
index 5565775270f9..9bdefbba9e90 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
@@ -4,6 +4,11 @@
*/
/ {
+ aliases {
+ rtc0 = &rtc;
+ rtc1 = &snvs_rtc;
+ };
+
usdhc1_pwrseq: usdhc1_pwrseq {
compatible = "mmc-pwrseq-simple";
pinctrl-names = "default";
@@ -219,7 +224,7 @@ eeprom@50 {
reg = <0x50>;
};
- rtc@51 {
+ rtc: rtc@51 {
compatible = "nxp,pcf85263";
reg = <0x51>;
};
--
2.25.1
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^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH V2 2/2] arm64: dts: imx8mm-beacon-som: Assign PMIC clock
2020-11-26 10:45 [PATCH V2 1/2] arm64: dts: imx8mm-beacon-som: Configure RTC aliases Adam Ford
@ 2020-11-26 10:45 ` Adam Ford
2020-12-01 1:50 ` [PATCH V2 1/2] arm64: dts: imx8mm-beacon-som: Configure RTC aliases Shawn Guo
1 sibling, 0 replies; 3+ messages in thread
From: Adam Ford @ 2020-11-26 10:45 UTC (permalink / raw)
To: linux-arm-kernel
Cc: devicetree, Fabio Estevam, Adam Ford, Sascha Hauer, aford,
linux-kernel, Rob Herring, NXP Linux Team,
Pengutronix Kernel Team, Shawn Guo
The PMIC throws an errors because the clock isn't assigned to it.
Fix this by assigning the clocks info.
Signed-off-by: Adam Ford <aford173@gmail.com>
---
V2: Remove fixes tag
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
index 9bdefbba9e90..d897913537ca 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
@@ -111,6 +111,10 @@ pmic@4b {
interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
rohm,reset-snvs-powered;
+ #clock-cells = <0>;
+ clocks = <&osc_32k 0>;
+ clock-output-names = "clk-32k-out";
+
regulators {
buck1_reg: BUCK1 {
regulator-name = "buck1";
--
2.25.1
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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH V2 1/2] arm64: dts: imx8mm-beacon-som: Configure RTC aliases
2020-11-26 10:45 [PATCH V2 1/2] arm64: dts: imx8mm-beacon-som: Configure RTC aliases Adam Ford
2020-11-26 10:45 ` [PATCH V2 2/2] arm64: dts: imx8mm-beacon-som: Assign PMIC clock Adam Ford
@ 2020-12-01 1:50 ` Shawn Guo
1 sibling, 0 replies; 3+ messages in thread
From: Shawn Guo @ 2020-12-01 1:50 UTC (permalink / raw)
To: Adam Ford
Cc: devicetree, Sascha Hauer, aford, linux-kernel, Rob Herring,
NXP Linux Team, Pengutronix Kernel Team, Fabio Estevam,
linux-arm-kernel
On Thu, Nov 26, 2020 at 04:45:34AM -0600, Adam Ford wrote:
> On the i.MX8MM Beacon SOM, there is an RTC chip which is fed power
> from the baseboard during power off. The SNVS RTC integrated into
> the SoC is not fed power. Depending on the order the modules are
> loaded, this can be a problem if the external RTC isn't rtc0.
>
> Make the alias for rtc0 point to the external RTC all the time and
> rtc1 point to the SVNS in order to correctly hold date/time over
> a power-cycle.
>
> Signed-off-by: Adam Ford <aford173@gmail.com>
Applied both, thanks.
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 3+ messages in thread
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2020-11-26 10:45 [PATCH V2 1/2] arm64: dts: imx8mm-beacon-som: Configure RTC aliases Adam Ford
2020-11-26 10:45 ` [PATCH V2 2/2] arm64: dts: imx8mm-beacon-som: Assign PMIC clock Adam Ford
2020-12-01 1:50 ` [PATCH V2 1/2] arm64: dts: imx8mm-beacon-som: Configure RTC aliases Shawn Guo
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