From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 19EDFC433DF for ; Sat, 6 Jun 2020 10:55:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 034F82077D for ; Sat, 6 Jun 2020 10:55:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728764AbgFFKzY (ORCPT ); Sat, 6 Jun 2020 06:55:24 -0400 Received: from alexa-out-sd-01.qualcomm.com ([199.106.114.38]:60628 "EHLO alexa-out-sd-01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728699AbgFFKzR (ORCPT ); Sat, 6 Jun 2020 06:55:17 -0400 Received: from unknown (HELO ironmsg04-sd.qualcomm.com) ([10.53.140.144]) by alexa-out-sd-01.qualcomm.com with ESMTP; 06 Jun 2020 03:55:16 -0700 Received: from sivaprak-linux.qualcomm.com ([10.201.3.202]) by ironmsg04-sd.qualcomm.com with ESMTP; 06 Jun 2020 03:55:12 -0700 Received: by sivaprak-linux.qualcomm.com (Postfix, from userid 459349) id 0E5F5217D7; Sat, 6 Jun 2020 16:25:08 +0530 (IST) From: Sivaprakash Murugesan To: agross@kernel.org, bjorn.andersson@linaro.org, mturquette@baylibre.com, sboyd@kernel.org, robh+dt@kernel.org, sivaprak@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH V7 2/4] clk: qcom: Add ipq apss pll driver Date: Sat, 6 Jun 2020 16:25:05 +0530 Message-Id: <1591440907-20021-3-git-send-email-sivaprak@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1591440907-20021-1-git-send-email-sivaprak@codeaurora.org> References: <1591440907-20021-1-git-send-email-sivaprak@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The CPUs on Qualcomm ipq based devices are clocked by an alpha PLL. Add support for the apss pll found on ipq based devices which can support CPU frequencies above 1Ghz. Signed-off-by: Sivaprakash Murugesan --- drivers/clk/qcom/Kconfig | 8 ++++ drivers/clk/qcom/Makefile | 1 + drivers/clk/qcom/apss-ipq-pll.c | 95 +++++++++++++++++++++++++++++++++++++++++ 3 files changed, 104 insertions(+) create mode 100644 drivers/clk/qcom/apss-ipq-pll.c diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig index abb121f..ee668eb 100644 --- a/drivers/clk/qcom/Kconfig +++ b/drivers/clk/qcom/Kconfig @@ -89,6 +89,14 @@ config APQ_MMCC_8084 Say Y if you want to support multimedia devices such as display, graphics, video encode/decode, camera, etc. +config IPQ_APSS_PLL + tristate "IPQ APSS PLL" + help + Support for APSS PLL on ipq devices. The APSS PLL is the main + clock that feeds the CPUs on ipq based devices. + Say Y if you want to support CPU frequency scaling on ipq based + devices. + config IPQ_GCC_4019 tristate "IPQ4019 Global Clock Controller" help diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile index 691efbf..b4a6ba1 100644 --- a/drivers/clk/qcom/Makefile +++ b/drivers/clk/qcom/Makefile @@ -19,6 +19,7 @@ clk-qcom-$(CONFIG_QCOM_GDSC) += gdsc.o # Keep alphabetically sorted by config obj-$(CONFIG_APQ_GCC_8084) += gcc-apq8084.o obj-$(CONFIG_APQ_MMCC_8084) += mmcc-apq8084.o +obj-$(CONFIG_IPQ_APSS_PLL) += apss-ipq-pll.o obj-$(CONFIG_IPQ_GCC_4019) += gcc-ipq4019.o obj-$(CONFIG_IPQ_GCC_6018) += gcc-ipq6018.o obj-$(CONFIG_IPQ_GCC_806X) += gcc-ipq806x.o diff --git a/drivers/clk/qcom/apss-ipq-pll.c b/drivers/clk/qcom/apss-ipq-pll.c new file mode 100644 index 0000000..e34f4cd --- /dev/null +++ b/drivers/clk/qcom/apss-ipq-pll.c @@ -0,0 +1,95 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2018, The Linux Foundation. All rights reserved. +#include +#include +#include +#include + +#include "clk-alpha-pll.h" + +static const u8 ipq_pll_offsets[] = { + [PLL_OFF_L_VAL] = 0x08, + [PLL_OFF_ALPHA_VAL] = 0x10, + [PLL_OFF_USER_CTL] = 0x18, + [PLL_OFF_CONFIG_CTL] = 0x20, + [PLL_OFF_CONFIG_CTL_U] = 0x24, + [PLL_OFF_STATUS] = 0x28, + [PLL_OFF_TEST_CTL] = 0x30, + [PLL_OFF_TEST_CTL_U] = 0x34, +}; + +static struct clk_alpha_pll ipq_pll = { + .offset = 0x0, + .regs = ipq_pll_offsets, + .flags = SUPPORTS_DYNAMIC_UPDATE, + .clkr = { + .enable_reg = 0x0, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "a53pll", + .parent_data = &(const struct clk_parent_data) { + .fw_name = "xo", + }, + .num_parents = 1, + .ops = &clk_alpha_pll_huayra_ops, + }, + }, +}; + +static const struct alpha_pll_config ipq_pll_config = { + .l = 0x37, + .config_ctl_val = 0x04141200, + .config_ctl_hi_val = 0x0, + .early_output_mask = BIT(3), + .main_output_mask = BIT(0), +}; + +static const struct regmap_config ipq_pll_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .max_register = 0x40, + .fast_io = true, +}; + +static int apss_ipq_pll_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct regmap *regmap; + void __iomem *base; + int ret; + + base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(base)) + return PTR_ERR(base); + + regmap = devm_regmap_init_mmio(dev, base, &ipq_pll_regmap_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + clk_alpha_pll_configure(&ipq_pll, regmap, &ipq_pll_config); + + ret = devm_clk_register_regmap(dev, &ipq_pll.clkr); + if (ret) + return ret; + + return devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get, + &ipq_pll.clkr.hw); +} + +static const struct of_device_id apss_ipq_pll_match_table[] = { + { .compatible = "qcom,ipq6018-a53pll" }, + { } +}; + +static struct platform_driver apss_ipq_pll_driver = { + .probe = apss_ipq_pll_probe, + .driver = { + .name = "qcom-ipq-apss-pll", + .of_match_table = apss_ipq_pll_match_table, + }, +}; +module_platform_driver(apss_ipq_pll_driver); + +MODULE_DESCRIPTION("Qualcomm technology Inc APSS ALPHA PLL Driver"); +MODULE_LICENSE("GPL v2"); -- 2.7.4