From: Krzysztof Kozlowski <krzk@kernel•org>
To: Yu-Chun Lin <eleanor.lin@realtek•com>,
robh@kernel•org, krzk+dt@kernel•org, conor+dt@kernel•org,
tychang@realtek•com
Cc: cy.huang@realtek•com, stanley_chang@realtek•com,
james.tai@realtek•com, afaerber@suse•com,
devicetree@vger•kernel.org, linux-kernel@vger•kernel.org,
linux-arm-kernel@lists•infradead.org,
linux-realtek-soc@lists•infradead.org
Subject: Re: [PATCH 1/3] dt-bindings: soc: realtek: Add Realtek DHC I/O level detector
Date: Thu, 4 Jun 2026 14:49:19 +0200 [thread overview]
Message-ID: <4d96835a-a273-4c46-85a2-03c059934650@kernel.org> (raw)
In-Reply-To: <20260604111821.975624-2-eleanor.lin@realtek.com>
On 04/06/2026 13:18, Yu-Chun Lin wrote:
> From: Tzuyi Chang <tychang@realtek•com>
>
> Add device tree binding documentation for the Realtek DHC I/O level
> detector.
>
> This hardware block is responsible for detecting the I/O signaling
> levels (e.g., 1.8V or 3.3V) of various interfaces (RGMII, SDIO, eMMC,
> etc.) and applying the corresponding pad configurations via pinctrl
> states.
>
> Signed-off-by: Tzuyi Chang <tychang@realtek•com>
> Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek•com>
> ---
> .../realtek/realtek,rtd1625-io-detect.yaml | 77 +++++++++++++++++++
> 1 file changed, 77 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/soc/realtek/realtek,rtd1625-io-detect.yaml
>
> diff --git a/Documentation/devicetree/bindings/soc/realtek/realtek,rtd1625-io-detect.yaml b/Documentation/devicetree/bindings/soc/realtek/realtek,rtd1625-io-detect.yaml
> new file mode 100644
> index 000000000000..badf27212dfd
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/realtek/realtek,rtd1625-io-detect.yaml
> @@ -0,0 +1,77 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +# Copyright 2026 Realtek Semiconductor Corporation
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/soc/realtek/realtek,rtd1625-io-detect.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Realtek DHC I/O Level Detector
> +
> +maintainers:
> + - Tzuyi Chang <tychang@realtek•com>
> +
> +description: |
Drop |
> + The Realtek DHC I/O Level Detector is a hardware block that detects I/O
> + signaling levels (such as 1.8V or 3.3V) to determine the correct pad
> + configurations for specific IP blocks.
> +
> +properties:
> + compatible:
> + const: realtek,rtd1625-io-detect
> +
No resources here, so does not look like a real device, but driver
instantiation.
> + pinctrl-names:
> + items:
> + - const: rgmii_1v8
> + - const: rgmii_3v3
> + - const: sdio_1v8
> + - const: sdio_3v3
> + - const: csi_1v8
> + - const: csi_3v3
> + - const: sd_1v8
> + - const: sd_3v3
> + - const: uart1_1v8
> + - const: uart1_3v3
> + - const: aio_1v8
> + - const: aio_3v3
> + - const: emmc_1v8
> + - const: emmc_3v3
> +
> + realtek,iso-pinctrl:
> + $ref: /schemas/types.yaml#/definitions/phandle
> + description:
> + Pinctrl phandle containing I/O detection registers.
MMIO registers are in 'reg' property.
> +
> +required:
> + - compatible
> + - pinctrl-names
> + - realtek,iso-pinctrl
Best regards,
Krzysztof
next prev parent reply other threads:[~2026-06-04 12:49 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-04 11:18 [PATCH 0/3] soc: realtek: Add Realtek DHC I/O level detector support Yu-Chun Lin
2026-06-04 11:18 ` [PATCH 1/3] dt-bindings: soc: realtek: Add Realtek DHC I/O level detector Yu-Chun Lin
2026-06-04 12:49 ` Krzysztof Kozlowski [this message]
2026-06-04 11:18 ` [PATCH 2/3] soc: realtek: Add driver for " Yu-Chun Lin
2026-06-04 11:18 ` [PATCH 3/3] arm64: dts: realtek: Add " Yu-Chun Lin
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