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Date: Tue, 26 Jan 2021 13:30:58 +0530
From: Vinod Koul <vkoul@...nel.org>
To: Bjorn Andersson <bjorn.andersson@...aro.org>
Cc: Stephen Boyd <sboyd@...nel.org>, linux-arm-msm@...r.kernel.org,
Andy Gross <agross@...nel.org>,
Michael Turquette <mturquette@...libre.com>,
Rob Herring <robh+dt@...nel.org>,
Taniya Das <tdas@...eaurora.org>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...ainline.org>,
linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, Rob Herring <robh@...nel.org>
Subject: Re: [PATCH v4 4/5] dt-bindings: clock: Add SM8350 GCC clock bindings
On 25-01-21, 11:25, Bjorn Andersson wrote:
> On Sun 17 Jan 22:43 CST 2021, Vinod Koul wrote:
>
> > Add device tree bindings for global clock controller on SM8350 SoCs.
> >
> > Reviewed-by: Rob Herring <robh@...nel.org>
> > Signed-off-by: Vinod Koul <vkoul@...nel.org>
> > ---
> > .../bindings/clock/qcom,gcc-sm8350.yaml | 96 +++++++
> > include/dt-bindings/clock/qcom,gcc-sm8350.h | 261 ++++++++++++++++++
> > 2 files changed, 357 insertions(+)
> > create mode 100644 Documentation/devicetree/bindings/clock/qcom,gcc-sm8350.yaml
> > create mode 100644 include/dt-bindings/clock/qcom,gcc-sm8350.h
> >
> > diff --git a/Documentation/devicetree/bindings/clock/qcom,gcc-sm8350.yaml b/Documentation/devicetree/bindings/clock/qcom,gcc-sm8350.yaml
> > new file mode 100644
> > index 000000000000..78f35832aa41
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/clock/qcom,gcc-sm8350.yaml
> > @@ -0,0 +1,96 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/clock/qcom,gcc-sm8350.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Qualcomm Global Clock & Reset Controller Binding for SM8350
> > +
> > +maintainers:
> > + - Vinod Koul <vkoul@...nel.org>
> > +
> > +description: |
> > + Qualcomm global clock control module which supports the clocks, resets and
> > + power domains on SM8350.
> > +
> > + See also:
> > + - dt-bindings/clock/qcom,gcc-sm8350.h
> > +
> > +properties:
> > + compatible:
> > + const: qcom,gcc-sm8350
> > +
> > + clocks:
> > + items:
> > + - description: Board XO source
> > + - description: Sleep clock source
> > + - description: PLL test clock source (Optional clock)
> > + - description: PCIE 0 Pipe clock source (Optional clock)
> > + - description: PCIE 1 Pipe clock source (Optional clock)
> > + - description: UFS card Rx symbol 0 clock source (Optional clock)
> > + - description: UFS card Rx symbol 1 clock source (Optional clock)
> > + - description: UFS card Tx symbol 0 clock source (Optional clock)
> > + - description: UFS phy Rx symbol 0 clock source (Optional clock)
> > + - description: UFS phy Rx symbol 1 clock source (Optional clock)
> > + - description: UFS phy Tx symbol 0 clock source (Optional clock)
> > + - description: USB3 phy wrapper pipe clock source (Optional clock)
> > + - description: USB3 phy sec pipe clock source (Optional clock)
> > + minItems: 2
> > + maxItems: 13
> > +
> > + clock-names:
> > + items:
> > + - const: bi_tcxo
> > + - const: sleep_clk
> > + - const: core_bi_pll_test_se # Optional clock
> > + - const: pcie_0_pipe_clk # Optional clock
> > + - const: pcie_1_pipe_clk # Optional clock
> > + - const: ufs_card_rx_symbol_0_clk # Optional clock
> > + - const: ufs_card_rx_symbol_1_clk # Optional clock
> > + - const: ufs_card_tx_symbol_0_clk # Optional clock
> > + - const: ufs_phy_rx_symbol_0_clk # Optional clock
> > + - const: ufs_phy_rx_symbol_1_clk # Optional clock
> > + - const: ufs_phy_tx_symbol_0_clk # Optional clock
> > + - const: usb3_phy_wrapper_gcc_usb30_pipe_clk # Optional clock
> > + - const: usb3_uni_phy_sec_gcc_usb30_pipe_clk # Optional clock
> > + minItems: 2
> > + maxItems: 13
> > +
> > + '#clock-cells':
> > + const: 1
> > +
> > + '#reset-cells':
> > + const: 1
> > +
> > + '#power-domain-cells':
> > + const: 1
> > +
> > + reg:
> > + maxItems: 1
> > +
> > +required:
> > + - compatible
> > + - clocks
> > + - clock-names
> > + - reg
> > + - '#clock-cells'
> > + - '#reset-cells'
> > + - '#power-domain-cells'
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > + - |
> > + #include <dt-bindings/clock/qcom,rpmh.h>
> > + clock-controller@...000 {
> > + compatible = "qcom,gcc-sm8350";
> > + reg = <0x00100000 0x1f0000>;
> > + clocks = <&rpmhcc RPMH_CXO_CLK>,
> > + <&sleep_clk>;
> > + clock-names = "bi_tcxo", "sleep_clk";
> > + #clock-cells = <1>;
> > + #reset-cells = <1>;
> > + #power-domain-cells = <1>;
> > + };
> > +
> > +...
> > diff --git a/include/dt-bindings/clock/qcom,gcc-sm8350.h b/include/dt-bindings/clock/qcom,gcc-sm8350.h
> > new file mode 100644
> > index 000000000000..2b289c5c109f
> > --- /dev/null
> > +++ b/include/dt-bindings/clock/qcom,gcc-sm8350.h
> > @@ -0,0 +1,261 @@
> > +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
> > +/*
> > + * Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.
> > + * Copyright (c) 2020-2021, Linaro Limited
> > + */
> > +
> > +#ifndef _DT_BINDINGS_CLK_QCOM_GCC_SM8350_H
> > +#define _DT_BINDINGS_CLK_QCOM_GCC_SM8350_H
> > +
> > +/* GCC HW clocks */
> > +#define CORE_BI_PLL_TEST_SE 0
> > +#define PCIE_0_PIPE_CLK 1
> > +#define PCIE_1_PIPE_CLK 2
> > +#define UFS_CARD_RX_SYMBOL_0_CLK 3
> > +#define UFS_CARD_RX_SYMBOL_1_CLK 4
> > +#define UFS_CARD_TX_SYMBOL_0_CLK 5
> > +#define UFS_PHY_RX_SYMBOL_0_CLK 6
> > +#define UFS_PHY_RX_SYMBOL_1_CLK 7
> > +#define UFS_PHY_TX_SYMBOL_0_CLK 8
> > +#define USB3_PHY_WRAPPER_GCC_USB30_PIPE_CLK 9
> > +#define USB3_UNI_PHY_SEC_GCC_USB30_PIPE_CLK 10
> > +
> > +/* GCC clocks */
> > +#define GCC_AGGRE_NOC_PCIE_0_AXI_CLK 11
> > +#define GCC_AGGRE_NOC_PCIE_1_AXI_CLK 12
> > +#define GCC_AGGRE_NOC_PCIE_TBU_CLK 13
> > +#define GCC_AGGRE_UFS_CARD_AXI_CLK 14
> > +#define GCC_AGGRE_UFS_CARD_AXI_HW_CTL_CLK 15
> > +#define GCC_AGGRE_UFS_PHY_AXI_CLK 16
> > +#define GCC_AGGRE_UFS_PHY_AXI_HW_CTL_CLK 17
> > +#define GCC_AGGRE_USB3_PRIM_AXI_CLK 18
> > +#define GCC_AGGRE_USB3_SEC_AXI_CLK 19
> > +#define GCC_BOOT_ROM_AHB_CLK 20
> > +#define GCC_CAMERA_AHB_CLK 21
>
> You removed these from the driver, so no need to expose them in the
> dt-binding either.
I did think about that and thought maybe it is better to leave the
defines. We can always update the driver to use if we ever felt the
need.
But then I dont think we will ever do that so makes sense, will update
this and send with acks collected
--
~Vinod
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