[RESEND PATCH] arm64: dts: ti: k3-am64-main: Add ADC nodes

[RESEND PATCH] arm64: dts: ti: k3-am64-main: Add ADC nodes

[Vignesh Raghavendra]

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>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
---

Rebase onto latest k3-dts-next:
v1: lore.kernel.org/r/20210309130708.12391-1-vigneshr@ti.com

Do note that dtbs_check warns about having the bindings converted to
YAML which is in my future TODO list.

 arch/arm64/boot/dts/ti/k3-am64-main.dtsi | 17 +++++++++++++++++
 arch/arm64/boot/dts/ti/k3-am642-evm.dts  |  5 +++++
 arch/arm64/boot/dts/ti/k3-am642-sk.dts   |  4 ++++
 3 files changed, 26 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
index 7e7997e3adff..dc852f63d1a2 100644
--- a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
@@ -521,4 +521,21 @@ usb0: usb@f400000{
 			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";
+		};
+	};
 };
diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
index 1365e3164294..6331fd426157 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
@@ -377,3 +377,8 @@ cpsw3g_phy0: ethernet-phy@0 {
 		ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
 	};
 };
+
+&tscadc0 {
+	/* ADC is reserved for R5 usage */
+	status = "reserved";
+};
diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
index 397ed3b2e121..8f9b1078b7b5 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
@@ -244,3 +244,7 @@ cpsw3g_phy1: ethernet-phy@1 {
 		ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
 	};
 };
+
+&tscadc0 {
+	status = "disabled";
+};
-- 
2.31.0

Re: [RESEND PATCH] arm64: dts: ti: k3-am64-main: Add ADC nodes

[Nishanth Menon]

On Thu, 18 Mar 2021 17:04:43 +0530, Vignesh Raghavendra wrote:
> 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.

Hi Vignesh Raghavendra,

I have applied the following to branch ti-k3-dts-next on [1].
Thank you!

[1/1] arm64: dts: ti: k3-am64-main: Add ADC nodes
      commit: fad4e18fe4dccacf68418da01e98c4b8fb590023

Thanks for rebasing and helping sequence. I have taken note that we
will be converting the binding to yaml in near future, so inline with
what we are doing now, accepting the patch.

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent up the chain during
the next merge window (or sooner if it is a relevant bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

[1] git://git.kernel.org/pub/scm/linux/kernel/git/nmenon/linux.git
-- 
Regards,
Nishanth Menon
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