linux-kernel - Re: [PATCH v6 1/8] dt-bindings: reset: Add AOSS reset bindings for SDM845 SoCs

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Message-ID: <20180627164714.GK1860@tuxbook-pro>
Date:   Wed, 27 Jun 2018 09:47:14 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Sibi Sankar <sibis@...eaurora.org>
Cc:     p.zabel@...gutronix.de, robh+dt@...nel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        mark.rutland@....com, kyan@...eaurora.org, akdwived@...eaurora.org,
        linux-arm-msm@...r.kernel.org, tsoni@...eaurora.org
Subject: Re: [PATCH v6 1/8] dt-bindings: reset: Add AOSS reset bindings for
 SDM845 SoCs

On Wed 27 Jun 07:24 PDT 2018, Sibi Sankar wrote:

> Add SDM845 AOSS (always on subsystem) reset controller binding
> 
> Signed-off-by: Sibi Sankar <sibis@...eaurora.org>

Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>

Regards,
Bjorn

> ---
> 
> Not including Rob's earlier Reviewed-by due to change in compatible 
> 
>  .../bindings/reset/qcom,aoss-reset.txt        | 52 +++++++++++++++++++
>  include/dt-bindings/reset/qcom,sdm845-aoss.h  | 17 ++++++
>  2 files changed, 69 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/reset/qcom,aoss-reset.txt
>  create mode 100644 include/dt-bindings/reset/qcom,sdm845-aoss.h
> 
> diff --git a/Documentation/devicetree/bindings/reset/qcom,aoss-reset.txt b/Documentation/devicetree/bindings/reset/qcom,aoss-reset.txt
> new file mode 100644
> index 000000000000..510c748656ec
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/reset/qcom,aoss-reset.txt
> @@ -0,0 +1,52 @@
> +Qualcomm AOSS Reset Controller
> +======================================
> +
> +This binding describes a reset-controller found on AOSS-CC (always on subsystem)
> +for Qualcomm SDM845 SoCs.
> +
> +Required properties:
> +- compatible:
> +	Usage: required
> +	Value type: <string>
> +	Definition: must be:
> +		    "qcom,sdm845-aoss-cc"
> +
> +- reg:
> +	Usage: required
> +	Value type: <prop-encoded-array>
> +	Definition: must specify the base address and size of the register
> +	            space.
> +
> +- #reset-cells:
> +	Usage: required
> +	Value type: <uint>
> +	Definition: must be 1; cell entry represents the reset index.
> +
> +Example:
> +
> +aoss_reset: reset-controller@...0000 {
> +	compatible = "qcom,sdm845-aoss-cc";
> +	reg = <0xc2a0000 0x31000>;
> +	#reset-cells = <1>;
> +};
> +
> +Specifying reset lines connected to IP modules
> +==============================================
> +
> +Device nodes that need access to reset lines should
> +specify them as a reset phandle in their corresponding node as
> +specified in reset.txt.
> +
> +For list of all valid reset indicies see
> +<dt-bindings/reset/qcom,sdm845-aoss.h>
> +
> +Example:
> +
> +modem-pil@...0000 {
> +	...
> +
> +	resets = <&aoss_reset AOSS_CC_MSS_RESTART>;
> +	reset-names = "mss_restart";
> +
> +	...
> +};
> diff --git a/include/dt-bindings/reset/qcom,sdm845-aoss.h b/include/dt-bindings/reset/qcom,sdm845-aoss.h
> new file mode 100644
> index 000000000000..476c5fc873b6
> --- /dev/null
> +++ b/include/dt-bindings/reset/qcom,sdm845-aoss.h
> @@ -0,0 +1,17 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (C) 2018 The Linux Foundation. All rights reserved.
> + */
> +
> +#ifndef _DT_BINDINGS_RESET_AOSS_SDM_845_H
> +#define _DT_BINDINGS_RESET_AOSS_SDM_845_H
> +
> +#define AOSS_CC_MSS_RESTART	0
> +#define AOSS_CC_CAMSS_RESTART	1
> +#define AOSS_CC_VENUS_RESTART	2
> +#define AOSS_CC_GPU_RESTART	3
> +#define AOSS_CC_DISPSS_RESTART	4
> +#define AOSS_CC_WCSS_RESTART	5
> +#define AOSS_CC_LPASS_RESTART	6
> +
> +#endif
> -- 
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>