linux-kernel - Re: [PATCH 04/11] clk: qcom: camcc-qcs615: Add QCS615 camera clock controller driver

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Message-ID: <7xwnojpxf2yhrug6imptivqojfunxqqeaxgmr7g3jv5iuj46d6@wna6yjl6qfgy>
Date: Fri, 18 Oct 2024 23:19:48 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Taniya Das <quic_tdas@...cinc.com>
Cc: Bjorn Andersson <andersson@...nel.org>, 
	Michael Turquette <mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>, 
	Abhishek Sahu <absahu@...eaurora.org>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>, 
	Ajit Pandey <quic_ajipan@...cinc.com>, Imran Shaik <quic_imrashai@...cinc.com>, 
	Jagadeesh Kona <quic_jkona@...cinc.com>, Stephen Boyd <sboyd@...eaurora.org>, 
	linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 04/11] clk: qcom: camcc-qcs615: Add QCS615 camera clock
 controller driver

On Sat, Oct 19, 2024 at 12:45:40AM +0530, Taniya Das wrote:
> Add support for the camera clock controller for camera clients to
> be able to request for camcc clocks on QCS615 platform.
> 
> Signed-off-by: Taniya Das <quic_tdas@...cinc.com>
> ---
>  drivers/clk/qcom/Kconfig        |   10 +
>  drivers/clk/qcom/Makefile       |    1 +
>  drivers/clk/qcom/camcc-qcs615.c | 1588 +++++++++++++++++++++++++++++++++++++++
>  3 files changed, 1599 insertions(+)
> 
> diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
> index 30eb8236c9d80071a87e0332cfac7b667a08824a..bdb1c672dd90d96814b214afd234341e37e3c470 100644
> --- a/drivers/clk/qcom/Kconfig
> +++ b/drivers/clk/qcom/Kconfig
> @@ -460,6 +460,16 @@ config QCM_DISPCC_2290
>  	  Say Y if you want to support display devices and functionality such as
>  	  splash screen.
>  
> +config QCS_CAMCC_615
> +	tristate "QCS615 Camera Clock Controller"
> +	depends on ARM64 || COMPILE_TEST
> +	select QCS_GCC_615
> +	help
> +	  Support for the camera clock controller on Qualcomm Technologies, Inc
> +	  QCS615 devices.
> +	  Say Y if you want to support camera devices and functionality such as
> +	  capturing pictures.
> +
>  config QCS_GCC_404
>  	tristate "QCS404 Global Clock Controller"
>  	help
> diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile
> index 2b378667a63ff6eca843d7bef638a5422d35c3d3..f69c1bc13d3eca1859d9e849399e55175df869c3 100644
> --- a/drivers/clk/qcom/Makefile
> +++ b/drivers/clk/qcom/Makefile
> @@ -69,6 +69,7 @@ obj-$(CONFIG_QCOM_CLK_RPMH) += clk-rpmh.o
>  obj-$(CONFIG_QCOM_CLK_SMD_RPM) += clk-smd-rpm.o
>  obj-$(CONFIG_QCM_GCC_2290) += gcc-qcm2290.o
>  obj-$(CONFIG_QCM_DISPCC_2290) += dispcc-qcm2290.o
> +obj-$(CONFIG_QCS_CAMCC_615) += camcc-qcs615.o
>  obj-$(CONFIG_QCS_GCC_404) += gcc-qcs404.o
>  obj-$(CONFIG_QCS_Q6SSTOP_404) += q6sstop-qcs404.o
>  obj-$(CONFIG_QCS_TURING_404) += turingcc-qcs404.o
> diff --git a/drivers/clk/qcom/camcc-qcs615.c b/drivers/clk/qcom/camcc-qcs615.c
> new file mode 100644
> index 0000000000000000000000000000000000000000..2341ddb57598eaaa7fa35300ae6635ff40da99ae
> --- /dev/null
> +++ b/drivers/clk/qcom/camcc-qcs615.c
> @@ -0,0 +1,1588 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Copyright (c) 2024, Qualcomm Innovation Center, Inc. All rights reserved.
> + */
> +
> +#include <linux/clk-provider.h>
> +#include <linux/module.h>
> +#include <linux/mod_devicetable.h>
> +#include <linux/of.h>
> +#include <linux/platform_device.h>
> +#include <linux/regmap.h>
> +
> +#include <dt-bindings/clock/qcom,qcs615-camcc.h>
> +
> +#include "clk-alpha-pll.h"
> +#include "clk-branch.h"
> +#include "clk-pll.h"
> +#include "clk-rcg.h"
> +#include "clk-regmap.h"
> +#include "clk-regmap-divider.h"
> +#include "clk-regmap-mux.h"
> +#include "common.h"
> +#include "gdsc.h"
> +#include "reset.h"
> +
> +enum {
> +	DT_BI_TCXO,
> +	DT_BI_TCXO_AO,

This doesn't match DT bindings.

> +};
> +
> +enum {
> +	P_BI_TCXO,
> +	P_CAM_CC_PLL0_OUT_AUX,
> +	P_CAM_CC_PLL1_OUT_AUX,
> +	P_CAM_CC_PLL2_OUT_AUX2,
> +	P_CAM_CC_PLL2_OUT_EARLY,
> +	P_CAM_CC_PLL3_OUT_MAIN,
> +};
> +

Other than that LGTM. I didn't verify the actual values though.

-- 
With best wishes
Dmitry