From patchwork Sun Apr 5 11:29:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sivaprakash Murugesan X-Patchwork-Id: 11474659 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D68E91392 for ; Sun, 5 Apr 2020 11:30:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BE8CD20659 for ; Sun, 5 Apr 2020 11:30:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726626AbgDELab (ORCPT ); Sun, 5 Apr 2020 07:30:31 -0400 Received: from alexa-out-sd-02.qualcomm.com ([199.106.114.39]:52995 "EHLO alexa-out-sd-02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726622AbgDELaI (ORCPT ); Sun, 5 Apr 2020 07:30:08 -0400 Received: from unknown (HELO ironmsg02-sd.qualcomm.com) ([10.53.140.142]) by alexa-out-sd-02.qualcomm.com with ESMTP; 05 Apr 2020 04:30:07 -0700 Received: from sivaprak-linux.qualcomm.com ([10.201.3.202]) by ironmsg02-sd.qualcomm.com with ESMTP; 05 Apr 2020 04:30:04 -0700 Received: by sivaprak-linux.qualcomm.com (Postfix, from userid 459349) id B01FF21657; Sun, 5 Apr 2020 17:00:02 +0530 (IST) From: Sivaprakash Murugesan To: agross@kernel.org, bjorn.andersson@linaro.org, mturquette@baylibre.com, sboyd@kernel.org, robh+dt@kernel.org, jassisinghbrar@gmail.com, linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, sivaprak@codeaurora.org Subject: [PATCH V2 5/8] clk: qcom: Add ipq apss clock controller Date: Sun, 5 Apr 2020 16:59:22 +0530 Message-Id: <1586086165-19426-6-git-send-email-sivaprak@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1586086165-19426-1-git-send-email-sivaprak@codeaurora.org> References: <1586086165-19426-1-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 CPU on Qualcomm's IPQ platform devices are clocked primarily by a PLL and xo which are connected to a mux and enable block, This patch adds support for the mux and the enable. Signed-off-by: Sivaprakash Murugesan --- [V2] * Addressed review comments from Stephen. * Moved the PLL to separate patch drivers/clk/qcom/Kconfig | 10 +++++ drivers/clk/qcom/Makefile | 1 + drivers/clk/qcom/apss-ipq.c | 107 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 118 insertions(+) create mode 100644 drivers/clk/qcom/apss-ipq.c diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig index 15cdcdc..8573f2e 100644 --- a/drivers/clk/qcom/Kconfig +++ b/drivers/clk/qcom/Kconfig @@ -89,6 +89,16 @@ 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 + tristate "IPQ APSS Clock Controller" + default N + help + Support for APSS clock controller on ipq platform devices. The + APSS clock controller manages the Mux and enable block that feeds the + CPUs. + 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 656a87e..1e4b296 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) += apss-ipq.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.c b/drivers/clk/qcom/apss-ipq.c new file mode 100644 index 0000000..a37cd98 --- /dev/null +++ b/drivers/clk/qcom/apss-ipq.c @@ -0,0 +1,107 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2018, The Linux Foundation. All rights reserved. + */ + +#include +#include +#include +#include +#include +#include + +#include + +#include "common.h" +#include "clk-regmap.h" +#include "clk-branch.h" +#include "clk-alpha-pll.h" +#include "clk-regmap-mux.h" + +enum { + P_XO, + P_APSS_PLL_EARLY, +}; + +static const struct clk_parent_data parents_apcs_alias0_clk_src[] = { + { .fw_name = "xo" }, + { .fw_name = "pll" }, +}; + +static const struct parent_map parents_apcs_alias0_clk_src_map[] = { + { P_XO, 0 }, + { P_APSS_PLL_EARLY, 5 }, +}; + +static struct clk_regmap_mux apcs_alias0_clk_src = { + .reg = 0x0050, + .width = 3, + .shift = 7, + .parent_map = parents_apcs_alias0_clk_src_map, + .clkr.hw.init = &(struct clk_init_data){ + .name = "apcs_alias0_clk_src", + .parent_data = parents_apcs_alias0_clk_src, + .num_parents = 2, + .ops = &clk_regmap_mux_closest_ops, + .flags = CLK_SET_RATE_PARENT, + }, +}; + +/*required for cpufreq*/ +static struct clk_branch apcs_alias0_core_clk = { + .halt_reg = 0x0058, + .clkr = { + .enable_reg = 0x0058, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "apcs_alias0_core_clk", + .parent_hws = (const struct clk_hw *[]){ + &apcs_alias0_clk_src.clkr.hw }, + .num_parents = 1, + .flags = CLK_SET_RATE_PARENT | CLK_IS_CRITICAL, + .ops = &clk_branch2_ops, + }, + }, +}; + +static const struct regmap_config apss_ipq_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .max_register = 0x1000, + .fast_io = true, +}; + +static struct clk_regmap *apss_ipq_clks[] = { + [APCS_ALIAS0_CLK_SRC] = &apcs_alias0_clk_src.clkr, + [APCS_ALIAS0_CORE_CLK] = &apcs_alias0_core_clk.clkr, +}; + +static const struct qcom_cc_desc apss_ipq_desc = { + .config = &apss_ipq_regmap_config, + .clks = apss_ipq_clks, + .num_clks = ARRAY_SIZE(apss_ipq_clks), +}; + +static int apss_ipq_probe(struct platform_device *pdev) +{ + struct regmap *regmap; + + regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + return qcom_cc_really_probe(pdev, &apss_ipq_desc, regmap); +} + +static struct platform_driver apss_ipq_driver = { + .probe = apss_ipq_probe, + .driver = { + .name = "qcom,apss-ipq-clk", + }, +}; + +module_platform_driver(apss_ipq_driver); + +MODULE_DESCRIPTION("QCOM APSS IPQ CLK Driver"); +MODULE_LICENSE("GPL v2");