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[73.228.159.35]) by smtp.gmail.com with ESMTPSA id ca18e2360f4ac-85e2bc13d74sm125798039f.11.2025.03.23.06.23.39 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 23 Mar 2025 06:23:40 -0700 (PDT) Message-ID: Date: Sun, 23 Mar 2025 08:23:39 -0500 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH RESEND 4/7] clk: spacemit: define existing syscon resets To: Yixun Lan Cc: p.zabel@pengutronix.de, mturquette@baylibre.com, sboyd@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, heylenay@4d2.org, guodong@riscstar.com, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, spacemit@lists.linux.dev, devicetree@vger.kernel.org, linux-clk@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org References: <20250321151831.623575-1-elder@riscstar.com> <20250321151831.623575-5-elder@riscstar.com> <20250322162909-GYA15267@gentoo> Content-Language: en-US From: Alex Elder In-Reply-To: <20250322162909-GYA15267@gentoo> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 3/22/25 11:29 AM, Yixun Lan wrote: > On 10:18 Fri 21 Mar , Alex Elder wrote: >> Define reset controls associated with the MPMU, APBC, and APMU >> SpacemiT K1 CCUs. These already have clocks associated with them. >> >> Signed-off-by: Alex Elder >> --- >> drivers/clk/spacemit/ccu-k1.c | 132 ++++++++++++++++++++++++++++++++++ >> 1 file changed, 132 insertions(+) >> >> diff --git a/drivers/clk/spacemit/ccu-k1.c b/drivers/clk/spacemit/ccu-k1.c >> index 6d879411c6c05..be8abd27753cb 100644 >> --- a/drivers/clk/spacemit/ccu-k1.c >> +++ b/drivers/clk/spacemit/ccu-k1.c > .. >> +static const struct ccu_reset_data apmu_reset_data[] = { >> + [RST_CCIC_4X] = RST_DATA(APMU_CCIC_CLK_RES_CTRL, 0, BIT(1)), >> + [RST_CCIC1_PHY] = RST_DATA(APMU_CCIC_CLK_RES_CTRL, 0, BIT(2)), >> + [RST_SDH_AXI] = RST_DATA(APMU_SDH0_CLK_RES_CTRL, 0, BIT(0)), >> + [RST_SDH0] = RST_DATA(APMU_SDH0_CLK_RES_CTRL, 0, BIT(1)), >> + [RST_SDH1] = RST_DATA(APMU_SDH1_CLK_RES_CTRL, 0, BIT(1)), >> + [RST_SDH2] = RST_DATA(APMU_SDH2_CLK_RES_CTRL, 0, BIT(1)), >> + [RST_USBP1_AXI] = RST_DATA(APMU_USB_CLK_RES_CTRL, 0, BIT(4)), >> + [RST_USB_AXI] = RST_DATA(APMU_USB_CLK_RES_CTRL, 0, BIT(0)), > .. >> + [RST_USB3_0] = RST_DATA(APMU_USB_CLK_RES_CTRL, 0, >> + BIT(9)|BIT(10)|BIT(11)), > 100 column if possible, also add one space between "BIT(9) | BIT(10) .." > continuous bits can just use GENMASK for short? You'll notice that every place that has multiple bits in the mask also have a line break. I kind of liked that as a way to highlight that fact (i.e., it goes beyond my preference for 80 columns). I will definitely add spaces, that was a mistake not to. I will not define this with GENMASK(). In this case each bit represents a single reset, and so each one is significant on its own. It is *not* a mask of contiguous bits, it's a set of bits that happen to have consecutive positions. -Alex > but may result slightly unreadable, anyway, either way is fine by me > >> + [RST_QSPI] = RST_DATA(APMU_QSPI_CLK_RES_CTRL, 0, BIT(1)), >> + [RST_QSPI_BUS] = RST_DATA(APMU_QSPI_CLK_RES_CTRL, 0, BIT(0)), >> + [RST_DMA] = RST_DATA(APMU_DMA_CLK_RES_CTRL, 0, BIT(0)), >> + [RST_AES] = RST_DATA(APMU_AES_CLK_RES_CTRL, 0, BIT(4)), >> + [RST_VPU] = RST_DATA(APMU_VPU_CLK_RES_CTRL, 0, BIT(0)), >> + [RST_GPU] = RST_DATA(APMU_GPU_CLK_RES_CTRL, 0, BIT(1)), >> + [RST_EMMC] = RST_DATA(APMU_PMUA_EM_CLK_RES_CTRL, 0, BIT(1)), >> + [RST_EMMC_X] = RST_DATA(APMU_PMUA_EM_CLK_RES_CTRL, 0, BIT(0)), >> + [RST_AUDIO] = RST_DATA(APMU_AUDIO_CLK_RES_CTRL, 0, >> + BIT(0) | BIT(2) | BIT(3)), >> + [RST_HDMI] = RST_DATA(APMU_HDMI_CLK_RES_CTRL, 0, BIT(9)), >> + [RST_PCIE0] = RST_DATA(APMU_PCIE_CLK_RES_CTRL_0, BIT(8), >> + BIT(3) | BIT(4) | BIT(5)), >> + [RST_PCIE1] = RST_DATA(APMU_PCIE_CLK_RES_CTRL_1, BIT(8), >> + BIT(3) | BIT(4) | BIT(5)), >> + [RST_PCIE2] = RST_DATA(APMU_PCIE_CLK_RES_CTRL_2, BIT(8), >> + BIT(3) | BIT(4) | BIT(5)), >> + [RST_EMAC0] = RST_DATA(APMU_EMAC0_CLK_RES_CTRL, 0, BIT(1)), >> + [RST_EMAC1] = RST_DATA(APMU_EMAC1_CLK_RES_CTRL, 0, BIT(1)), >> + [RST_JPG] = RST_DATA(APMU_JPG_CLK_RES_CTRL, 0, BIT(0)), >> + [RST_CCIC2PHY] = RST_DATA(APMU_CSI_CCIC2_CLK_RES_CTRL, 0, BIT(2)), >> + [RST_CCIC3PHY] = RST_DATA(APMU_CSI_CCIC2_CLK_RES_CTRL, 0, BIT(29)), >> + [RST_CSI] = RST_DATA(APMU_CSI_CCIC2_CLK_RES_CTRL, 0, BIT(1)), >> + [RST_ISP] = RST_DATA(APMU_ISP_CLK_RES_CTRL, 0, BIT(0)), >> + [RST_ISP_CPP] = RST_DATA(APMU_ISP_CLK_RES_CTRL, 0, BIT(27)), >> + [RST_ISP_BUS] = RST_DATA(APMU_ISP_CLK_RES_CTRL, 0, BIT(3)), >> + [RST_ISP_CI] = RST_DATA(APMU_ISP_CLK_RES_CTRL, 0, BIT(16)), >> + [RST_DPU_MCLK] = RST_DATA(APMU_LCD_CLK_RES_CTRL2, 0, BIT(9)), >> + [RST_DPU_ESC] = RST_DATA(APMU_LCD_CLK_RES_CTRL1, 0, BIT(3)), >> + [RST_DPU_HCLK] = RST_DATA(APMU_LCD_CLK_RES_CTRL1, 0, BIT(4)), >> + [RST_DPU_SPIBUS] = RST_DATA(APMU_LCD_SPI_CLK_RES_CTRL, 0, BIT(4)), >> + [RST_DPU_SPI_HBUS] = RST_DATA(APMU_LCD_SPI_CLK_RES_CTRL, 0, BIT(2)), >> + [RST_V2D] = RST_DATA(APMU_LCD_CLK_RES_CTRL1, 0, BIT(27)), >> + [RST_MIPI] = RST_DATA(APMU_LCD_CLK_RES_CTRL1, 0, BIT(15)), >> + [RST_MC] = RST_DATA(APMU_PMUA_MC_CTRL, 0, BIT(0)), >> +}; >> + >> +static const struct ccu_reset_controller_data apmu_reset_controller_data = { >> + .count = ARRAY_SIZE(apmu_reset_data), >> + .data = apmu_reset_data, >> +}; >> + >> static const struct k1_ccu_data k1_ccu_apmu_data = { >> .clk = k1_ccu_apmu_clks, >> + .rst_data = &apmu_reset_controller_data, >> }; >> >> static struct ccu_reset_controller * >> -- >> 2.43.0 >> >