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Message-ID: <20200405020946.GA6110@bogus>
Date: Sat, 4 Apr 2020 20:09:46 -0600
From: Rob Herring <robh@...nel.org>
To: Taniya Das <tdas@...eaurora.org>
Cc: Stephen Boyd <sboyd@...nel.org>,
Michael Turquette
<mturquette@...libre.com>, David Brown <david.brown@...aro.org>,
Rajendra Nayak <rnayak@...eaurora.org>,
linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org,
linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
Andy Gross <agross@...nel.org>, devicetree@...r.kernel.org
Subject: Re: [PATCH v1 2/4] dt-bindings: clock: Add YAML schemas for LPASS
clocks on SC7180
On Sat, Mar 28, 2020 at 01:18:03AM +0530, Taniya Das wrote:
> The LPASS(Low Power Audio Subsystem) clock provider have a bunch of generic
> properties that are needed in a device tree. Also add clock ids for GCC
> LPASS and LPASS Core clock IDs for LPASS client to request for the clocks.
>
> Signed-off-by: Taniya Das <tdas@...eaurora.org>
> ---
> .../bindings/clock/qcom,sc7180-lpasscorecc.yaml | 81 ++++++++++++++++++++++
> include/dt-bindings/clock/qcom,gcc-sc7180.h | 1 +
> .../dt-bindings/clock/qcom,lpasscorecc-sc7180.h | 28 ++++++++
> 3 files changed, 110 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/clock/qcom,sc7180-lpasscorecc.yaml
> create mode 100644 include/dt-bindings/clock/qcom,lpasscorecc-sc7180.h
>
> diff --git a/Documentation/devicetree/bindings/clock/qcom,sc7180-lpasscorecc.yaml b/Documentation/devicetree/bindings/clock/qcom,sc7180-lpasscorecc.yaml
> new file mode 100644
> index 0000000..d040bd1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/qcom,sc7180-lpasscorecc.yaml
> @@ -0,0 +1,81 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/clock/qcom,sc7180-lpasscorecc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm LPASS Core Clock Controller Binding for SC7180
> +
> +maintainers:
> + - Taniya Das <tdas@...eaurora.org>
> +
> +description: |
> + Qualcomm LPASS core clock control module which supports the clocks and
> + power domains on SC7180.
> +
> + See also:
> + - dt-bindings/clock/qcom,lpasscorecc-sc7180.h
> +
> +properties:
> + compatible:
> + enum:
> + - qcom,sc7180-lpasshm
> + - qcom,sc7180-lpasscorecc
> +
> + clocks:
> + items:
> + - description: gcc_lpass_sway clock from GCC
> +
> + clock-names:
> + items:
> + - const: gcc_lpass_sway
> +
> + power-domains:
> + items:
> + - description: LPASS CORE HM GSDCR
> +
> + '#clock-cells':
> + const: 1
> +
> + '#power-domain-cells':
> + const: 1
> +
> + reg:
> + minItems: 1
> + maxItems: 2
Need to define what each one is when there are 2.
> +
> +required:
> + - compatible
> + - reg
> + - clocks
> + - clock-names
> + - '#clock-cells'
> + - '#power-domain-cells'
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/clock/qcom,gcc-sc7180.h>
> + #include <dt-bindings/clock/qcom,lpasscorecc-sc7180.h>
> + clock-controller@...00000 {
> + compatible = "qcom,sc7180-lpasshm";
> + reg = <0 0x63000000 0 0x28>;
> + clocks = <&gcc GCC_LPASS_CFG_NOC_SWAY_CLK>;
> + clock-names = "gcc_lpass_sway";
> + #clock-cells = <1>;
> + #power-domain-cells = <1>;
> + };
> +
> + - |
> + clock-controller@...00000 {
> + compatible = "qcom,sc7180-lpasscorecc";
> + reg = <0 0x62d00000 0 0x50000>,
> + <0 0x62780000 0 0x30000>;
> + clocks = <&gcc GCC_LPASS_CFG_NOC_SWAY_CLK>;
> + clock-names = "gcc_lpass_sway";
> + power-domains = <&lpass_hm LPASS_CORE_HM_GDSCR>;
> + #clock-cells = <1>;
> + #power-domain-cells = <1>;
> + };
> +...
> diff --git a/include/dt-bindings/clock/qcom,gcc-sc7180.h b/include/dt-bindings/clock/qcom,gcc-sc7180.h
> index 1258fd0..439476c 100644
> --- a/include/dt-bindings/clock/qcom,gcc-sc7180.h
> +++ b/include/dt-bindings/clock/qcom,gcc-sc7180.h
> @@ -137,6 +137,7 @@
> #define GCC_MSS_NAV_AXI_CLK 127
> #define GCC_MSS_Q6_MEMNOC_AXI_CLK 128
> #define GCC_MSS_SNOC_AXI_CLK 129
> +#define GCC_LPASS_CFG_NOC_SWAY_CLK 130
>
> /* GCC resets */
> #define GCC_QUSB2PHY_PRIM_BCR 0
> diff --git a/include/dt-bindings/clock/qcom,lpasscorecc-sc7180.h b/include/dt-bindings/clock/qcom,lpasscorecc-sc7180.h
> new file mode 100644
> index 0000000..9466d5e
> --- /dev/null
> +++ b/include/dt-bindings/clock/qcom,lpasscorecc-sc7180.h
> @@ -0,0 +1,28 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
> +/*
> + * Copyright (c) 2020, The Linux Foundation. All rights reserved.
> + */
> +
> +#ifndef _DT_BINDINGS_CLK_QCOM_LPASS_CORE_CC_SC7180_H
> +#define _DT_BINDINGS_CLK_QCOM_LPASS_CORE_CC_SC7180_H
> +
> +/* LPASS_CORE_CC clocks */
> +#define LPASS_LPAAUDIO_DIG_PLL 0
> +#define LPASS_LPAAUDIO_DIG_PLL_OUT_ODD 1
> +#define CORE_CLK_SRC 2
> +#define EXT_MCLK0_CLK_SRC 3
> +#define LPAIF_PRI_CLK_SRC 4
> +#define LPAIF_SEC_CLK_SRC 5
> +#define LPASS_AUDIO_CORE_CORE_CLK 6
> +#define LPASS_AUDIO_CORE_EXT_MCLK0_CLK 7
> +#define LPASS_AUDIO_CORE_LPAIF_PRI_IBIT_CLK 8
> +#define LPASS_AUDIO_CORE_LPAIF_SEC_IBIT_CLK 9
> +#define LPASS_AUDIO_CORE_SYSNOC_MPORT_CORE_CLK 10
> +
> +/* LPASS power domains */
> +#define LPASS_CORE_HM_GDSCR 0
> +
> +#define LPASS_AUDIO_HM_GDSCR 0
Kind of odd that 2 are the same value.
> +#define LPASS_PDC_HM_GDSCR 1
> +
> +#endif
> --
> Qualcomm INDIA, on behalf of Qualcomm Innovation Center, Inc.is a member
> of the Code Aurora Forum, hosted by the Linux Foundation.
>
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