Messages in this thread | | | Date | Tue, 6 Feb 2024 12:29:13 -0600 | Subject | Re: [PATCH v1] arm64: dts: ti: verdin-am62: mallow: add TPM device | From | Andrew Davis <> |
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On 1/26/24 10:51 AM, Francesco Dolcini wrote: > From: Francesco Dolcini <francesco.dolcini@toradex.com> > > Add TPM device to Mallow device tree file, the device is connected to > the SoC with SPI1/CS1, the same SPI interface is also available on an > extension header together with an additional CS0 signal. > > Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com> > --- > arch/arm64/boot/dts/ti/k3-am62-verdin-mallow.dtsi | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/arch/arm64/boot/dts/ti/k3-am62-verdin-mallow.dtsi b/arch/arm64/boot/dts/ti/k3-am62-verdin-mallow.dtsi > index 17b93534f658..77b1beb638ad 100644 > --- a/arch/arm64/boot/dts/ti/k3-am62-verdin-mallow.dtsi > +++ b/arch/arm64/boot/dts/ti/k3-am62-verdin-mallow.dtsi > @@ -127,6 +127,16 @@ &main_spi1 { > <&pinctrl_qspi1_cs2_gpio>; > cs-gpios = <0>, <&main_gpio0 12 GPIO_ACTIVE_LOW>; > status = "okay"; > + > + tpm@1 { > + compatible = "infineon,slb9670", "tcg,tpm_tis-spi"; > + reg = <1>; > + pinctrl-names = "default"; > + pinctrl-0 = <&pinctrl_qspi1_dqs_gpio>; > + interrupt-parent = <&main_gpio1>; > + interrupts = <18 IRQ_TYPE_EDGE_FALLING>;
Just a heads-up, the SLB9670 datasheet says this device uses an active low interrupt (IRQ_TYPE_LEVEL_LOW). Using TYPE_EDGE here can cause missed interrupts if the line stays low for multiple interrupts.
Andrew
> + spi-max-frequency = <18500000>; > + }; > }; > > /* Verdin UART_3 */
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