From patchwork Tue Jul 30 10:25:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Duje_Mihanovi=C4=87_via_B4_Relay?= X-Patchwork-Id: 815788 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8AD1019D89E; Tue, 30 Jul 2024 10:26:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722335171; cv=none; b=q33nfW2nxFIz/OwjpWNmEFaF478e68iRkpIKOLfOIdDXrESS2jsbv10xMxXxdvZcnOlt1RJelaLtcYP72JqpVFSXVD/lI3+lo0mRBG5+sWvHqUXeKLZ4KqSRVxl2WkxdOPQusPQYtq6J3WiZMHWWsUWBaXsFFnlymdLnLS5PhRo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722335171; c=relaxed/simple; bh=AEWNeN+JICR4EcZxZthCK+HHrZK9kPhdty3g+UJ4U+I=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=fyCuocwWmVLRoK5OVS7UhnTnqGbS4qWefiLneqExr6sBrM1rdJUz3BSUHl9Z8iQazMc+PwaQBG6HQev3YaQl/9HJE0zpAO94pJbGHmfWY/fCCK1dohd+GPTkDNfVtCwr6Sw/7W0Vr7CvlHO6WJJbiZGuvHTWBs5GJPdKT2nU2i0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=emQbiUxZ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="emQbiUxZ" Received: by smtp.kernel.org (Postfix) with ESMTPS id 2372AC4AF53; Tue, 30 Jul 2024 10:26:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722335171; bh=AEWNeN+JICR4EcZxZthCK+HHrZK9kPhdty3g+UJ4U+I=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=emQbiUxZTwsra0sh7zDncdSBAaFnEaJJePqmr7WivbMxZ/Mbip3n9G8WuZUvRaz7j iANeNn/g+sg+5DUNlvJZAQL/AcXHnVuOs3t7w5SbFz/UScezgX8GE291rKQUY1fJm+ h6uQbH4fNx/Z2q/cwahLASLzbT9wyLoCJclKHRPeYYTdaqd/IKYBh8+d4uEncGn3iw 7sKOQZjpzLvFvdiUlBunkQe4fcVnQsPkQGXgK7u2IXt7N5idRCEQe/fCbJlwUszHHL SPiueQVsQKGR3/J38JzKpV7ch52nwREyjY07uM3bQ7Qcb1v6mG5bvPVnCpoSWFeTHz EPvsUKC6Dw9CQ== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 17960C3DA7F; Tue, 30 Jul 2024 10:26:11 +0000 (UTC) From: =?utf-8?q?Duje_Mihanovi=C4=87_via_B4_Relay?= Date: Tue, 30 Jul 2024 12:25:13 +0200 Subject: [PATCH v11 05/12] clk: mmp: Add Marvell PXA1908 APBC driver Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240730-pxa1908-lkml-v11-5-21dbb3e28793@skole.hr> References: <20240730-pxa1908-lkml-v11-0-21dbb3e28793@skole.hr> In-Reply-To: <20240730-pxa1908-lkml-v11-0-21dbb3e28793@skole.hr> To: Michael Turquette , Stephen Boyd , Linus Walleij , Rob Herring , Conor Dooley , Tony Lindgren , Haojian Zhuang , =?utf-8?q?Duje_Mihanovi=C4=87?= , Lubomir Rintel , Catalin Marinas , Will Deacon , Rob Herring , Krzysztof Kozlowski 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 0.14.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=6279; i=duje.mihanovic@skole.hr; s=20240706; h=from:subject:message-id; bh=LjTRA+snmoaVUrrzBhCFmFBGgt+UrcvoIXtSXsRi8aE=; b=owGbwMvMwCW21nBykGv/WmbG02pJDGkr9m9R6bj6ePqfi68S5HfsWd6oeDrsRuiNLfyea/zeL ph5b/mFNR2lLAxiXAyyYoosuf8dr/F+Ftm6PXuZAcwcViaQIQxcnAIwkeuPGRkeHuVrKcw9cVr8 +DdxDX++e8ZXdooKaW2afK1V+ved7pTNDH/4Kovu3rBR/+RbP8PkaM3as8UnduR1Mz29Ub/N+MT FNac5AA== X-Developer-Key: i=duje.mihanovic@skole.hr; a=openpgp; fpr=6DFF41D60DF314B5B76BA630AD319352458FAD03 X-Endpoint-Received: by B4 Relay for duje.mihanovic@skole.hr/20240706 with auth_id=191 X-Original-From: =?utf-8?q?Duje_Mihanovi=C4=87?= Reply-To: duje.mihanovic@skole.hr From: Duje Mihanović 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");