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Date: Wed, 21 Nov 2018 21:39:38 +0900
From: Chanwoo Choi <cw00.choi@...sung.com>
To: Kamil Konieczny <k.konieczny@...tner.samsung.com>
Cc: 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-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] clk: samsung: exynos5433: add imem clock
Hi,
On 2018년 11월 21일 21:05, Kamil Konieczny wrote:
> Add imem clock for exynos5433.
It is diffcult to understand the meaning of 'imem' without the description.
Please add more detailed description as the patch2 description.
>
> Signed-off-by: Kamil Konieczny <k.konieczny@...tner.samsung.com>
> ---
> drivers/clk/samsung/clk-exynos5433.c | 123 +++++++++++++++++++++++++
> include/dt-bindings/clock/exynos5433.h | 55 +++++++++++
> 2 files changed, 178 insertions(+)
>
> diff --git a/drivers/clk/samsung/clk-exynos5433.c b/drivers/clk/samsung/clk-exynos5433.c
> index 24c3360db65b..db29cbd1fbdc 100644
> --- a/drivers/clk/samsung/clk-exynos5433.c
> +++ b/drivers/clk/samsung/clk-exynos5433.c
> @@ -2345,6 +2345,129 @@ static const struct samsung_cmu_info fsys_cmu_info __initconst = {
> .clk_name = "aclk_fsys_200",
> };
>
> +/*
> + * Register offset definitions for CMU_IMEM
> + *
> + */
> +
Remove unneeded blank line.
> +#define ENABLE_ACLK_IMEM 0x0800
> +#define ENABLE_ACLK_IMEM_SSS 0x0808
> +#define ENABLE_ACLK_IMEM_SLIMSSS 0x080c
> +#define ENABLE_PCLK_IMEM 0x0900
> +#define ENABLE_PCLK_IMEM_SSS 0x0904
> +#define ENABLE_PCLK_IMEM_SLIMSSS 0x0908
When I checked the registers of IMEM block, there are more registers as following:
Why do you implement the clocks for only six registers?
CLK_ENABLE_ACLK_IMEM 0x0800
CLK_ENABLE_ACLK_IMEM_SECURE_INT_MEM 0x0804
CLK_ENABLE_ACLK_IMEM_SECURE_SSS 0x0808
CLK_ENABLE_ACLK_IMEM_SECURE_SLIMSSS 0x080C
CLK_ENABLE_ACLK_IMEM_SECURE_RTIC 0x0810
CLK_ENABLE_ACLK_IMEM_SECURE_SMMU_SSS 0x0814
CLK_ENABLE_ACLK_IMEM_SECURE_SMMU_SLIMSSS 0x0818
CLK_ENABLE_ACLK_IMEM_SECURE_SMMU_RTIC 0x081C
CLK_ENABLE_ACLK_IMEM_SECURE_ARGB_TX 0x0820
CLK_ENABLE_ACLK_IMEM_SECURE_SMMU_ARGB_TX 0x0824
CLK_ENABLE_PCLK_IMEM 0x0900
CLK_ENABLE_PCLK_IMEM_SECURE_SSS 0x0904
CLK_ENABLE_PCLK_IMEM_SECURE_SLIMSSS 0x0908
CLK_ENABLE_PCLK_IMEM_SECURE_RTIC 0x090C
CLK_ENABLE_PCLK_IMEM_SECURE_SMMU_SSS 0x0910
CLK_ENABLE_PCLK_IMEM_SECURE_SMMU_SLIMSSS 0x0914
CLK_ENABLE_PCLK_IMEM_SECURE_SMMU_RTIC 0x0918
CLK_ENABLE_PCLK_IMEM_SECURE_SMMU_ARGB_TX 0x091C
CLK_ENABLE_IP_IMEM0 0x0B00
CLK_ENABLE_IP_IMEM1 0x0B04
CLK_ENABLE_IP_IMEM_SECURE_INT_MEM 0x0B08
CLK_ENABLE_IP_IMEM_SECURE_SSS 0x0B0C
CLK_ENABLE_IP_IMEM_SECURE_SLIMSSS 0x0B10
CLK_ENABLE_IP_IMEM_SECURE_RTIC 0x0B14
CLK_ENABLE_IP_IMEM_SECURE_SMMU_SSS 0x0B18
CLK_ENABLE_IP_IMEM_SECURE_SMMU_SLIMSSS 0x0B1C
CLK_ENABLE_IP_IMEM_SECURE_SMMU_RTIC 0x0B20
CLK_ENABLE_IP_IMEM_SECURE_ARBG_TX 0x0B24
CLK_ENABLE_IP_IMEM_SECURE_SMMU_ARBG_TX 0x0B28
> +
> +static const unsigned long imem_clk_regs[] __initconst = {
> +ENABLE_ACLK_IMEM,
> +ENABLE_ACLK_IMEM_SSS,
> +ENABLE_ACLK_IMEM_SLIMSSS,
> +ENABLE_PCLK_IMEM,
> +ENABLE_PCLK_IMEM_SSS,
> +ENABLE_PCLK_IMEM_SLIMSSS,
Add a tab in front of registers.
> +};
> +
> +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),
> + GATE(CLK_ACLK_SROMC, "aclk_sromc", "aclk_imem_200",
> + ENABLE_ACLK_IMEM, 22, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_BTS_ARBG_TX, "aclk_bts_arbg_tx", "aclk_imem_266",
> + ENABLE_ACLK_IMEM, 21, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_ASYNCAXI_IMEMX, "aclk_asyncaxi_imemx", "aclk_imem_266",
> + ENABLE_ACLK_IMEM, 20, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_AXIUS_IMEMX, "aclk_axius_imemx", "aclk_imem_266",
> + ENABLE_ACLK_IMEM, 19, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_XIU_IMEMX, "aclk_xiu_imemx", "aclk_imem_266",
> + ENABLE_ACLK_IMEM, 18, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_ASYNCAXI_SSSX, "aclk_asyncaxi_sssx", "aclk_imem_sssx_266",
> + ENABLE_ACLK_IMEM, 17, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_BTS_SLIMSSS, "aclk_bts_slimsss", "aclk_imem_sssx_266",
> + ENABLE_ACLK_IMEM, 15, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_BTS_SSS_DRAM, "aclk_bts_sss_dram", "aclk_imem_sssx_266",
> + ENABLE_ACLK_IMEM, 14, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_BTS_SSS_CCI, "aclk_bts_sss_cci", "aclk_imem_sssx_266",
> + ENABLE_ACLK_IMEM, 13, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_ALB_IMEM, "aclk_alb_imem", "aclk_imem_266",
> + ENABLE_ACLK_IMEM, 12, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_AXIDS_PIMEMX_IMEM1P, "aclk_axids_pimemx_imem1p", "aclk_imem_200",
> + ENABLE_ACLK_IMEM, 11, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_AXIDS_PIMEMX_IMEM0P, "aclk_axids_pimemx_imem0p", "aclk_imem_200",
> + ENABLE_ACLK_IMEM, 10, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_AXIDS_PIMEMX_GIC, "aclk_axids_pimemx_gic", "aclk_imem_200",
> + ENABLE_ACLK_IMEM, 9, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_ASYNCAHBM_SSS_ATLAS, "aclk_asyncahbm_sss_atlas", "aclk_imem_sssx_266",
> + ENABLE_ACLK_IMEM, 7, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_ASYNCAXIS_MIF_PIMEMX, "aclk_asyncaxis_mif_pimemx", "aclk_imem_200",
> + ENABLE_ACLK_IMEM, 6, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_AXI2APB_IMEM1P, "aclk_axi2apb_imem1p", "aclk_imem_200",
> + ENABLE_ACLK_IMEM, 5, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_AXI2APB_IMEM0P, "aclk_axi2apb_imem0p", "aclk_imem_200",
> + ENABLE_ACLK_IMEM, 4, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_XIU_SSSX, "aclk_xiu_sssx", "aclk_imem_sssx_266",
> + ENABLE_ACLK_IMEM, 3, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_XIU_PIMEMX, "aclk_xiu_pimemx", "aclk_imem_200",
> + ENABLE_ACLK_IMEM, 2, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_IMEMND_266, "aclk_imemnd_266", "aclk_imem_266",
> + ENABLE_ACLK_IMEM, 1, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_ACLK_GIC, "aclk_gic", "aclk_imem_200",
> + ENABLE_ACLK_IMEM, 0, CLK_IGNORE_UNUSED, 0),
> +
> + /* ENABLE_ACLK_IMEM_SSS */
> + GATE(CLK_ACLK_SSS, "aclk_sss", "aclk_imem_sssx_266",
> + ENABLE_ACLK_IMEM_SSS, 0, CLK_IGNORE_UNUSED, 0),
> + /* ENABLE_ACLK_IMEM_SLIMSSS */
> + GATE(CLK_ACLK_SLIMSSS, "aclk_slimsss", "aclk_imem_sssx_266",
> + ENABLE_ACLK_IMEM_SLIMSSS, 0, CLK_IGNORE_UNUSED, 0),
> +
> + /* ENABLE_PCLK_IMEM */
> + GATE(CLK_PCLK_GPIO_IMEM, "pclk_gpio_imem", "aclk_imem_200",
> + ENABLE_PCLK_IMEM, 17, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_PCLK_ASYNCAXI_IMEMX, "pclk_asyncaxi_imemx", "aclk_imem_200",
> + ENABLE_PCLK_IMEM, 16, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_PCLK_BTS_ARBG_TX, "pclk_bts_arbg_tx", "aclk_imem_200",
> + ENABLE_PCLK_IMEM, 15, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_PCLK_ASYNCAPB_ARBG_TX, "pclk_asyncapb_arbg_tx", "aclk_imem_200",
> + ENABLE_PCLK_IMEM, 14, CLK_IGNORE_UNUSED, 0),
> +
> + GATE(CLK_PCLK_BTS_SLIMSSS, "pclk_bts_slimsss", "aclk_imem_200",
> + ENABLE_PCLK_IMEM, 8, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_PCLK_BTS_SSS_DRAM, "pclk_bts_sss_dram", "aclk_imem_200",
> + ENABLE_PCLK_IMEM, 7, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_PCLK_BTS_SSS_CCI, "pclk_bts_sss_cci", "aclk_imem_200",
> + ENABLE_PCLK_IMEM, 6, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_PCLK_ALB_IMEM, "pclk_alb_imem", "aclk_imem_200",
> + ENABLE_PCLK_IMEM, 5, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_PCLK_PMU_IMEM, "pclk_pmu_imem", "aclk_imem_200",
> + ENABLE_PCLK_IMEM, 4, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_PCLK_SYSREG_IMEM, "pclk_sysreg_imem", "aclk_imem_200",
> + ENABLE_PCLK_IMEM, 3, CLK_IGNORE_UNUSED, 0),
> + /* ENABLE_PCLK_IMEM_SSS */
> + GATE(CLK_PCLK_SSS, "pclk_sss", "aclk_imem_200",
> + ENABLE_PCLK_IMEM, 0, CLK_IGNORE_UNUSED, 0),
> + /* ENABLE_PCLK_IMEM_SLIMSSS */
> + GATE(CLK_PCLK_SLIMSSS, "pclk_slimsss", "aclk_imem_200",
> + ENABLE_PCLK_IMEM, 0, CLK_IGNORE_UNUSED, 0),
> +};
> +
> +static const struct samsung_cmu_info imem_cmu_info __initconst = {
> + .gate_clks = imem_gate_clks,
> + .nr_gate_clks = ARRAY_SIZE(imem_gate_clks),
> + .nr_clk_ids = IMEM_NR_CLK,
> + .clk_regs = imem_clk_regs,
> + .nr_clk_regs = ARRAY_SIZE(imem_clk_regs),
> +};
> +
> +static void __init exynos5433_cmu_imem_init(struct device_node *np)
> +{
> + samsung_cmu_register_one(np, &imem_cmu_info);
> +}
> +
> +CLK_OF_DECLARE(exynos5433_cmu_imem, "samsung,exynos5433-cmu-imem",
> + exynos5433_cmu_imem_init);
Except for "samsmung,exynos5433-cmu-atlas/apollo", the remained clock blocks
were added to exynos5433_cmu_of_match[] table for power management.
If there is no any h/w issue, add the new entry to exynos5433_cmu_of_match for imem block.
> +
> /*
> * Register offset definitions for CMU_G2D
> */
> diff --git a/include/dt-bindings/clock/exynos5433.h b/include/dt-bindings/clock/exynos5433.h
> index 87bb2b017143..312d8810b56d 100644
> --- a/include/dt-bindings/clock/exynos5433.h
> +++ b/include/dt-bindings/clock/exynos5433.h
> @@ -623,6 +623,61 @@
>
> #define FSYS_NR_CLK 116
>
> +/* CMU_IMEM */
> +#define CLK_ACLK_SSS 1
> +#define CLK_ACLK_SLIMSSS 2
> +#define CLK_ACLK_RTIC 3
> +#define CLK_ACLK_XIU_SSSX 4
> +#define CLK_ACLK_ASYNCAHBM_SSS_ATLAS 5
> +#define CLK_ACLK_ASYNCAXI_SSSX 6
> +#define CLK_ACLK_BTS_SSS_CCI 7
> +#define CLK_ACLK_BTS_SSS_DRAM 8
> +#define CLK_ACLK_BTS_SLIMSSS 9
> +#define CLK_ACLK_SMMU_SSS_CCI 10
> +#define CLK_ACLK_SMMU_SSS_DRAM 11
> +#define CLK_ACLK_SMMU_SLIMSSS 12
> +#define CLK_ACLK_SMMU_RTIC 13
> +#define CLK_ACLK_IMEMND_266 14
> +#define CLK_ACLK_ALB_IMEM 15
> +#define CLK_ACLK_XIU_IMEMX 16
> +#define CLK_ACLK_AXIUS_IMEMX 17
> +#define CLK_ACLK_ASYNCAXI_IMEMX 18
> +#define CLK_ACLK_ARBG_TX 19
> +#define CLK_ACLK_BTS_ARBG_TX 20
> +#define CLK_ACLK_SMMU_ARBG_TX 21
> +#define CLK_ACLK_GIC 22
> +#define CLK_ACLK_INT_MEM 23
> +#define CLK_ACLK_XIU_PIMEMX 24
> +#define CLK_ACLK_AXI2APB_IMEM0P 25
> +#define CLK_ACLK_AXI2APB_IMEM1P 26
> +#define CLK_ACLK_ASYNCAXIS_MIF_PIMEMX 27
> +#define CLK_ACLK_AXIDS_PIMEMX_GIC 28
> +#define CLK_ACLK_AXIDS_PIMEMX_IMEM0P 29
> +#define CLK_ACLK_AXIDS_PIMEMX_IMEM1P 30
> +#define CLK_ACLK_SROMC 31
> +#define CLK_ACLK_AXIDS_SROMC 32
> +#define CLK_ACLK_AXI2AHB_IMEMH 33
> +#define CLK_PCLK_SSS 34
> +#define CLK_PCLK_SLIMSSS 35
> +#define CLK_PCLK_RTIC 36
> +#define CLK_PCLK_SYSREG_IMEM 37
> +#define CLK_PCLK_PMU_IMEM 38
> +#define CLK_PCLK_ALB_IMEM 39
> +#define CLK_PCLK_BTS_SSS_CCI 40
> +#define CLK_PCLK_BTS_SSS_DRAM 41
> +#define CLK_PCLK_BTS_SLIMSSS 42
> +#define CLK_PCLK_SMMU_SSS_CCI 43
> +#define CLK_PCLK_SMMU_SSS_DRAM 44
> +#define CLK_PCLK_SMMU_SLIMSSS 45
> +#define CLK_PCLK_SMMU_RTIC 46
> +#define CLK_PCLK_ASYNCAPB_ARBG_TX 47
> +#define CLK_PCLK_BTS_ARBG_TX 48
> +#define CLK_PCLK_SMMU_ARBG_TX 49
> +#define CLK_PCLK_ASYNCAXI_IMEMX 50
> +#define CLK_PCLK_GPIO_IMEM 51
> +
> +#define IMEM_NR_CLK 52
> +
> /* CMU_G2D */
> #define CLK_MUX_ACLK_G2D_266_USER 1
> #define CLK_MUX_ACLK_G2D_400_USER 2
>
--
Best Regards,
Chanwoo Choi
Samsung Electronics
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