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charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 9/25/2022 1:46 AM, Marek Vasut wrote: > The PMIC is the 32 kHz clock source for the RTC_XTALI input of the SoC > on this system. The RTC_XTALI input is used to supply 32 kHz clock to > the SVNS RTC per "i.MX 8M Mini Applications Processor Reference Manual, > Rev. 3, 11/2020" page 759 "The 32KHz XTAL module uses a different IP and > it is used as the clock source for the RTC, located in the SNVS." The > PMIC has its own dedicated 32 kHz XTAL on input. > > Model the connection in DT. > > Signed-off-by: Marek Vasut Reviewed-by: Peng Fan > --- > Cc: Fabio Estevam > Cc: NXP Linux Team > Cc: Peng Fan > Cc: Shawn Guo > To: linux-arm-kernel@lists.infradead.org > --- > .../dts/freescale/imx8mm-data-modul-edm-sbc.dts | 13 +++++++++++++ > 1 file changed, 13 insertions(+) > > diff --git a/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc.dts b/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc.dts > index 6ff30cbb32fb2..575d5632296c5 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc.dts > +++ b/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc.dts > @@ -53,6 +53,12 @@ clk_xtal25: clk-xtal25 { > clock-frequency = <25000000>; > }; > > + clk_xtal32k: clk-xtal32k { > + compatible = "fixed-clock"; > + #clock-cells = <0>; > + clock-frequency = <32768>; > + }; > + > panel: panel { > backlight = <&backlight>; > power-supply = <®_panel_vcc>; > @@ -276,6 +282,9 @@ &i2c1 { > pmic: pmic@4b { > compatible = "rohm,bd71847"; > reg = <0x4b>; > + #clock-cells = <0>; > + clocks = <&clk_xtal32k 0>; > + clock-output-names = "clk-32k-out"; > pinctrl-names = "default"; > pinctrl-0 = <&pinctrl_pmic>; > interrupt-parent = <&gpio1>; > @@ -942,6 +951,10 @@ &sai5 { > status = "disabled"; > }; > > +&snvs_rtc { > + clocks = <&pmic>; > +}; > + > &uart1 { > pinctrl-names = "default"; > pinctrl-0 = <&pinctrl_uart1>; _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel