linux-kernel - Re: [PATCH 2/3] interconnect: qcom: Add SM4450 interconnect provider driver

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Date:   Fri, 8 Sep 2023 10:16:50 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Tengfei Fan <quic_tengfan@...cinc.com>, agross@...nel.org,
        andersson@...nel.org, djakov@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        catalin.marinas@....com, will@...nel.org
Cc:     arnd@...db.de, geert+renesas@...der.be, nfraprado@...labora.com,
        rafal@...ecki.pl, peng.fan@....com, linux-arm-msm@...r.kernel.org,
        linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        quic_tsoni@...cinc.com, quic_shashim@...cinc.com,
        quic_kaushalk@...cinc.com, quic_tdas@...cinc.com,
        quic_tingweiz@...cinc.com, quic_aiquny@...cinc.com,
        kernel@...cinc.com
Subject: Re: [PATCH 2/3] interconnect: qcom: Add SM4450 interconnect provider
 driver

On 8.09.2023 08:44, Tengfei Fan wrote:
> Add driver for the Qualcomm interconnect buses found in SM4450 based
> platforms. The topology consists of several NoCs that are controlled
> by a remote processor that collects the aggregated bandwidth for each
> master-slave pairs.
> 
> Signed-off-by: Tengfei Fan <quic_tengfan@...cinc.com>
> ---
[...]

> +++ b/drivers/interconnect/qcom/sm4450.c
> @@ -0,0 +1,1848 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Copyright (c) 2023, Qualcomm Innovation Center, Inc. All rights reserved.
> + *
Stray blank line
> + */
> +
> +#include <linux/device.h>
> +#include <linux/interconnect.h>
> +#include <linux/interconnect-provider.h>
> +#include <linux/io.h>
Is this necessary?

> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +#include <linux/of_platform.h>
> +#include <linux/platform_device.h>
> +#include <dt-bindings/interconnect/qcom,sm4450.h>
> +
[...]

> +static struct qcom_icc_node * const mmss_noc_nodes[] = {
> +	[MASTER_CAMNOC_HF] = &qnm_camnoc_hf,
> +	[MASTER_CAMNOC_ICP] = &qnm_camnoc_icp,
> +	[MASTER_CAMNOC_SF] = &qnm_camnoc_sf,
> +	[MASTER_MDP] = &qnm_mdp,
> +	[MASTER_CNOC_MNOC_CFG] = &qnm_mnoc_cfg,
> +	[MASTER_VIDEO_P0_MMNOC] = &qnm_video0,
> +	[MASTER_VIDEO_PROC_MMNOC] = &qnm_video_cpu,
> +	[SLAVE_MNOC_HF_MEM_NOC] = &qns_mem_noc_hf,
> +	[SLAVE_MNOC_SF_MEM_NOC] = &qns_mem_noc_sf,
> +	[SLAVE_SERVICE_MNOC] = &srvc_mnoc,
> +	[MASTER_MDP_DISP] = &qnm_mdp_disp,
> +	[SLAVE_MNOC_HF_MEM_NOC_DISP] = &qns_mem_noc_hf_disp,
Please drop the _DISP paths, upstream will handle these with icc
tags.

[...]

> +
> +static const struct of_device_id qnoc_of_match[] = {
> +	{ .compatible = "qcom,sm4450-aggre1-noc",
> +	  .data = &sm4450_aggre1_noc},
Nit, but please:

- make these one line, like this:
{ .compatible = "qcom,sm4450-aggre1-noc", .data = &sm4450_aggre1_noc },

- add the missing space before '}'

Konrad