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arm64: dts: ti: k3-am64-main: Add ADC nodes 

AM64 SoC has a single ADC IP with 8 channels. Add DT node for the same.

Default usecase is to control ADC from non Linux core on the system on
AM642 GP EVM, therefore mark the node as reserved in k3-am642-evm.dts
file. ADC lines are not pinned out on AM642 SK board, therefore disable
the node in k3-am642-sk.dts file.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Link: https://lore.kernel.org/r/20210318113443.20036-1-vigneshr@ti.com
This commit is contained in:
Vignesh Raghavendra 2021-03-18 17:04:43 +05:30 committed by Nishanth Menon
parent 04a80a75ba
commit fad4e18fe4
3 changed files with 26 additions and 0 deletions
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17
arch/arm64/boot/dts/ti/k3-am64-main.dtsi
View File

@ -521,4 +521,21 @@
dr_mode = "otg";
};
};
tscadc0: tscadc@28001000 {
compatible = "ti,am654-tscadc", "ti,am3359-tscadc";
reg = <0x00 0x28001000 0x00 0x1000>;
interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>;
power-domains = <&k3_pds 0 TI_SCI_PD_EXCLUSIVE>;
clocks = <&k3_clks 0 0>;
assigned-clocks = <&k3_clks 0 0>;
assigned-clock-parents = <&k3_clks 0 3>;
assigned-clock-rates = <60000000>;
clock-names = "adc_tsc_fck";
adc {
#io-channel-cells = <1>;
compatible = "ti,am654-adc", "ti,am3359-adc";
};
};
};

5
arch/arm64/boot/dts/ti/k3-am642-evm.dts
View File

@ -377,3 +377,8 @@
ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
};
};
&tscadc0 {
/* ADC is reserved for R5 usage */
status = "reserved";
};

4
arch/arm64/boot/dts/ti/k3-am642-sk.dts
View File

@ -244,3 +244,7 @@
ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
};
};
&tscadc0 {
status = "disabled";
};