From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?utf-8?q?Duje_Mihanovi=C4=87?= Date: Wed, 24 Apr 2024 20:42:32 +0200 Subject: [PATCH v10 05/12] clk: mmp: Add Marvell PXA1908 APBC driver MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Message-Id: <20240424-pxa1908-lkml-v10-5-36cdfb5841f9@skole.hr> References: <20240424-pxa1908-lkml-v10-0-36cdfb5841f9@skole.hr> In-Reply-To: <20240424-pxa1908-lkml-v10-0-36cdfb5841f9@skole.hr> To: Michael Turquette , Stephen Boyd , Linus Walleij , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Tony Lindgren , Haojian Zhuang , =?utf-8?q?Duje_Mihanovi=C4=87?= , Lubomir Rintel , Catalin Marinas , Will Deacon , Kees Cook , Tony Luck , "Guilherme G. Piccoli" , Rob Herring Cc: phone-devel@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht, Karel Balej , David Wronek , linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=6279; i=duje.mihanovic@skole.hr; h=from:subject:message-id; bh=2ueMN7racA0A+ykUU1Tl7iszLboImnJQvYFMA8VOXu4=; b=owEBbQKS/ZANAwAIAZoRnrBCLZbhAcsmYgBmKVKUqrhPUXVfPHmgBG+6h/QwJ6mbPz0QsiqtB k7KaoPqeKaJAjMEAAEIAB0WIQRT351NnD/hEPs2LXiaEZ6wQi2W4QUCZilSlAAKCRCaEZ6wQi2W 4cAsD/90ZaCa2FO7dJOc2QILMu5Zino/shAdbWBtM4eaF//YiazlB0wsdGXFWzwL1wp62V9yaim VV5CenYTv4DpNILTN0h7EuV7/keh1Y06QhWQPh6QRSehDucgJpukGsUX7D89Fq1UP8JOCygxca1 Z6YcSRpKKu5/Eamu3D2UvV4x66nonOrJy09stGfE5kd7nHaRYk4lmZjogScSvJgvmODD+wNfkV+ Lt+HrrCPm7aAmpA4NcFSH4kUi29K8J3U8gHHg/gxJRSrJlbiYC8Il4akhhJy6rxwF1SLUEYRJu/ K022Q91pCbWu7hLZNJRPfCBl4WLOXBw/TV9rYnZ5p9KgOt+KuRD7nsRVQt5schts8VUXFHZLEzW vjK93SGJ6Hm7+YzcJUlfAW/xMIWGvdbp13GFZRbRpo7jCFecJTONZilqxz5LP6jSngueSzQr1U/ kKevm46KJlTBezd/5qxp69LI9hh8KUAsDc8esmdXZTSZrz3cGZVD3Ufb2OZGN/11If/KPecZckh rhDuHCEF5q/R9aTwqqAdgrX4Qqo/plYFWX6FDZ2ZYJRLmit+1fjVPVfvvTgbBNRgmFM0Cgg9ZwN +dTH6SdAXoL/PALnEWnJa0zbM0Cpj0sttYEMJwJqg3sun082wguuE8gRzj03JyYp0w5fInNzdua O/orgmtgTjb10tw== X-Developer-Key: i=duje.mihanovic@skole.hr; a=openpgp; fpr=53DF9D4D9C3FE110FB362D789A119EB0422D96E1 X-Endpoint-Received: by B4 Relay for duje.mihanovic@skole.hr/default with auth_id=112 List-Id: B4 Relay Submissions Add driver for the APBC controller block found on Marvell's PXA1908 SoC. Signed-off-by: Duje Mihanović --- drivers/clk/mmp/Makefile | 2 +- drivers/clk/mmp/clk-pxa1908-apbc.c | 131 +++++++++++++++++++++++++++++++++++++ 2 files changed, 132 insertions(+), 1 deletion(-) diff --git a/drivers/clk/mmp/Makefile b/drivers/clk/mmp/Makefile index 441bf83080a1..685bb80f8ae1 100644 --- a/drivers/clk/mmp/Makefile +++ b/drivers/clk/mmp/Makefile @@ -11,4 +11,4 @@ obj-$(CONFIG_MACH_MMP_DT) += clk-of-pxa168.o clk-of-pxa910.o obj-$(CONFIG_COMMON_CLK_MMP2) += clk-of-mmp2.o clk-pll.o pwr-island.o obj-$(CONFIG_COMMON_CLK_MMP2_AUDIO) += clk-audio.o -obj-y += clk-of-pxa1928.o +obj-$(CONFIG_ARCH_MMP) += clk-of-pxa1928.o clk-pxa1908-apbc.o diff --git a/drivers/clk/mmp/clk-pxa1908-apbc.c b/drivers/clk/mmp/clk-pxa1908-apbc.c new file mode 100644 index 000000000000..a418b9f895c1 --- /dev/null +++ b/drivers/clk/mmp/clk-pxa1908-apbc.c @@ -0,0 +1,131 @@ +// SPDX-License-Identifier: GPL-2.0-only +#include +#include +#include +#include +#include + +#include + +#include "clk.h" + +#define APBC_UART0 0x0 +#define APBC_UART1 0x4 +#define APBC_GPIO 0x8 +#define APBC_PWM0 0xc +#define APBC_PWM1 0x10 +#define APBC_PWM2 0x14 +#define APBC_PWM3 0x18 +#define APBC_SSP0 0x1c +#define APBC_SSP1 0x20 +#define APBC_IPC_RST 0x24 +#define APBC_RTC 0x28 +#define APBC_TWSI0 0x2c +#define APBC_KPC 0x30 +#define APBC_SWJTAG 0x40 +#define APBC_SSP2 0x4c +#define APBC_TWSI1 0x60 +#define APBC_THERMAL 0x6c +#define APBC_TWSI3 0x70 + +#define APBC_NR_CLKS 19 + +struct pxa1908_clk_unit { + struct mmp_clk_unit unit; + void __iomem *base; +}; + +static DEFINE_SPINLOCK(pwm0_lock); +static DEFINE_SPINLOCK(pwm2_lock); + +static DEFINE_SPINLOCK(uart0_lock); +static DEFINE_SPINLOCK(uart1_lock); + +static const char * const uart_parent_names[] = {"pll1_117", "uart_pll"}; +static const char * const ssp_parent_names[] = {"pll1_d16", "pll1_d48", "pll1_d24", "pll1_d12"}; + +static struct mmp_param_gate_clk apbc_gate_clks[] = { + {PXA1908_CLK_TWSI0, "twsi0_clk", "pll1_32", CLK_SET_RATE_PARENT, APBC_TWSI0, 0x7, 3, 0, 0, NULL}, + {PXA1908_CLK_TWSI1, "twsi1_clk", "pll1_32", CLK_SET_RATE_PARENT, APBC_TWSI1, 0x7, 3, 0, 0, NULL}, + {PXA1908_CLK_TWSI3, "twsi3_clk", "pll1_32", CLK_SET_RATE_PARENT, APBC_TWSI3, 0x7, 3, 0, 0, NULL}, + {PXA1908_CLK_GPIO, "gpio_clk", "vctcxo", CLK_SET_RATE_PARENT, APBC_GPIO, 0x7, 3, 0, 0, NULL}, + {PXA1908_CLK_KPC, "kpc_clk", "clk32", CLK_SET_RATE_PARENT, APBC_KPC, 0x7, 3, 0, MMP_CLK_GATE_NEED_DELAY, NULL}, + {PXA1908_CLK_RTC, "rtc_clk", "clk32", CLK_SET_RATE_PARENT, APBC_RTC, 0x87, 0x83, 0, MMP_CLK_GATE_NEED_DELAY, NULL}, + {PXA1908_CLK_PWM0, "pwm0_clk", "pwm01_apb_share", CLK_SET_RATE_PARENT, APBC_PWM0, 0x2, 2, 0, 0, &pwm0_lock}, + {PXA1908_CLK_PWM1, "pwm1_clk", "pwm01_apb_share", CLK_SET_RATE_PARENT, APBC_PWM1, 0x6, 2, 0, 0, NULL}, + {PXA1908_CLK_PWM2, "pwm2_clk", "pwm23_apb_share", CLK_SET_RATE_PARENT, APBC_PWM2, 0x2, 2, 0, 0, NULL}, + {PXA1908_CLK_PWM3, "pwm3_clk", "pwm23_apb_share", CLK_SET_RATE_PARENT, APBC_PWM3, 0x6, 2, 0, 0, NULL}, + {PXA1908_CLK_UART0, "uart0_clk", "uart0_mux", CLK_SET_RATE_PARENT, APBC_UART0, 0x7, 3, 0, 0, &uart0_lock}, + {PXA1908_CLK_UART1, "uart1_clk", "uart1_mux", CLK_SET_RATE_PARENT, APBC_UART1, 0x7, 3, 0, 0, &uart1_lock}, + {PXA1908_CLK_THERMAL, "thermal_clk", NULL, 0, APBC_THERMAL, 0x7, 3, 0, 0, NULL}, + {PXA1908_CLK_IPC_RST, "ipc_clk", NULL, 0, APBC_IPC_RST, 0x7, 3, 0, 0, NULL}, + {PXA1908_CLK_SSP0, "ssp0_clk", "ssp0_mux", 0, APBC_SSP0, 0x7, 3, 0, 0, NULL}, + {PXA1908_CLK_SSP2, "ssp2_clk", "ssp2_mux", 0, APBC_SSP2, 0x7, 3, 0, 0, NULL}, +}; + +static struct mmp_param_mux_clk apbc_mux_clks[] = { + {0, "uart0_mux", uart_parent_names, ARRAY_SIZE(uart_parent_names), CLK_SET_RATE_PARENT, APBC_UART0, 4, 3, 0, &uart0_lock}, + {0, "uart1_mux", uart_parent_names, ARRAY_SIZE(uart_parent_names), CLK_SET_RATE_PARENT, APBC_UART1, 4, 3, 0, &uart1_lock}, + {0, "ssp0_mux", ssp_parent_names, ARRAY_SIZE(ssp_parent_names), 0, APBC_SSP0, 4, 3, 0, NULL}, + {0, "ssp2_mux", ssp_parent_names, ARRAY_SIZE(ssp_parent_names), 0, APBC_SSP2, 4, 3, 0, NULL}, +}; + +static void pxa1908_apb_periph_clk_init(struct pxa1908_clk_unit *pxa_unit) +{ + struct mmp_clk_unit *unit = &pxa_unit->unit; + struct clk *clk; + + mmp_clk_register_gate(NULL, "pwm01_apb_share", "pll1_d48", + CLK_SET_RATE_PARENT, + pxa_unit->base + APBC_PWM0, + 0x5, 1, 0, 0, &pwm0_lock); + mmp_clk_register_gate(NULL, "pwm23_apb_share", "pll1_d48", + CLK_SET_RATE_PARENT, + pxa_unit->base + APBC_PWM2, + 0x5, 1, 0, 0, &pwm2_lock); + clk = mmp_clk_register_apbc("swjtag", NULL, + pxa_unit->base + APBC_SWJTAG, 10, 0, NULL); + mmp_clk_add(unit, PXA1908_CLK_SWJTAG, clk); + mmp_register_mux_clks(unit, apbc_mux_clks, pxa_unit->base, + ARRAY_SIZE(apbc_mux_clks)); + mmp_register_gate_clks(unit, apbc_gate_clks, pxa_unit->base, + ARRAY_SIZE(apbc_gate_clks)); +} + +static int pxa1908_apbc_probe(struct platform_device *pdev) +{ + struct pxa1908_clk_unit *pxa_unit; + + pxa_unit = devm_kzalloc(&pdev->dev, sizeof(*pxa_unit), GFP_KERNEL); + if (IS_ERR(pxa_unit)) + return PTR_ERR(pxa_unit); + + pxa_unit->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(pxa_unit->base)) + return PTR_ERR(pxa_unit->base); + + mmp_clk_init(pdev->dev.of_node, &pxa_unit->unit, APBC_NR_CLKS); + + pxa1908_apb_periph_clk_init(pxa_unit); + + return 0; +} + +static const struct of_device_id pxa1908_apbc_match_table[] = { + { .compatible = "marvell,pxa1908-apbc" }, + { } +}; +MODULE_DEVICE_TABLE(of, pxa1908_apbc_match_table); + +static struct platform_driver pxa1908_apbc_driver = { + .probe = pxa1908_apbc_probe, + .driver = { + .name = "pxa1908-apbc", + .of_match_table = pxa1908_apbc_match_table + } +}; +module_platform_driver(pxa1908_apbc_driver); + +MODULE_AUTHOR("Duje Mihanović "); +MODULE_DESCRIPTION("Marvell PXA1908 APBC Clock Driver"); +MODULE_LICENSE("GPL"); -- 2.44.0