linux-kernel - Re: [PATCH v3 5/5] clk: samsung: exynos5433: add imem clocks

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Date:   Tue, 04 Dec 2018 10:40:45 -0800
From:   Stephen Boyd <sboyd@...nel.org>
To:     k.konieczny@...tner.samsung.com, linux-samsung-soc@...r.kernel.org
Cc:     Chanwoo Choi <cw00.choi@...sung.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Kukjin Kim <kgene@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 5/5] clk: samsung: exynos5433: add imem clocks

Quoting Kamil Konieczny (2018-12-04 08:52:48)
> +
> +static const unsigned long imem_clk_regs[] __initconst = {
> +       ENABLE_ACLK_IMEM,
> +       ENABLE_ACLK_IMEM_INT_MEM,
> +       ENABLE_ACLK_IMEM_SSS,
> +       ENABLE_ACLK_IMEM_SLIMSSS,
> +       ENABLE_ACLK_IMEM_RTIC,
> +       ENABLE_ACLK_IMEM_SMMU_SSS,
> +       ENABLE_ACLK_IMEM_SMMU_SLIMSSS,
> +       ENABLE_ACLK_IMEM_SMMU_RTIC,
> +       ENABLE_ACLK_IMEM_ARBG_TX,
> +       ENABLE_ACLK_IMEM_SMMU_ARBG_TX,
> +       ENABLE_PCLK_IMEM,
> +       ENABLE_PCLK_IMEM_SSS,
> +       ENABLE_PCLK_IMEM_SLIMSSS,
> +       ENABLE_PCLK_IMEM_RTIC,
> +       ENABLE_PCLK_IMEM_SMMU_SSS,
> +       ENABLE_PCLK_IMEM_SMMU_SLIMSSS,
> +       ENABLE_PCLK_IMEM_SMMU_RTIC,
> +       ENABLE_PCLK_IMEM_SMMU_ARGB_TX,
> +};
> +
> +static const struct samsung_gate_clock imem_gate_clks[] __initconst = {
> +       /* ENABLE_ACLK_IMEM */
> +       GATE(CLK_ACLK_AXI2AHB_IMEMH, "aclk_axi2ahb_imemh", "aclk_imem_200",
> +                       ENABLE_ACLK_IMEM, 24, 0, 0),
> +       GATE(CLK_ACLK_AXIDS_SROMC, "aclk_axids_sromc", "aclk_imem_200",
> +                       ENABLE_ACLK_IMEM, 23, CLK_IGNORE_UNUSED, 0),

Why is there so much use of CLK_IGNORE_UNUSED in this file?

> +       GATE(CLK_ACLK_SROMC, "aclk_sromc", "aclk_imem_200",