diff options
Diffstat (limited to 'target/linux/ipq806x/patches/0167-clk-qcom-Add-HFPLL-driver.patch')
| -rw-r--r-- | target/linux/ipq806x/patches/0167-clk-qcom-Add-HFPLL-driver.patch | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches/0167-clk-qcom-Add-HFPLL-driver.patch b/target/linux/ipq806x/patches/0167-clk-qcom-Add-HFPLL-driver.patch new file mode 100644 index 0000000000..c2c1680ea2 --- /dev/null +++ b/target/linux/ipq806x/patches/0167-clk-qcom-Add-HFPLL-driver.patch @@ -0,0 +1,162 @@ +From 49134da893bc11e833e3d87139c57e3b84e65219 Mon Sep 17 00:00:00 2001 +From: Stephen Boyd <sboyd@codeaurora.org> +Date: Thu, 19 Jun 2014 18:46:31 -0700 +Subject: [PATCH 167/182] clk: qcom: Add HFPLL driver + +On some devices (MSM8974 for example), the HFPLLs are +instantiated within the Krait processor subsystem as separate +register regions. Add a driver for these PLLs so that we can +provide HFPLL clocks for use by the system. + +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> +--- + drivers/clk/qcom/Kconfig | 8 ++++ + drivers/clk/qcom/Makefile | 1 + + drivers/clk/qcom/hfpll.c | 110 +++++++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 119 insertions(+) + create mode 100644 drivers/clk/qcom/hfpll.c + +diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig +index cfaa54c..de8ba31 100644 +--- a/drivers/clk/qcom/Kconfig ++++ b/drivers/clk/qcom/Kconfig +@@ -53,3 +53,11 @@ config MSM_MMCC_8974 + Support for the multimedia clock controller on msm8974 devices. + Say Y if you want to support multimedia devices such as display, + graphics, video encode/decode, camera, etc. ++ ++config QCOM_HFPLL ++ tristate "High-Frequency PLL (HFPLL) Clock Controller" ++ depends on COMMON_CLK_QCOM ++ help ++ Support for the high-frequency PLLs present on Qualcomm devices. ++ Say Y if you want to support CPU frequency scaling on devices ++ such as MSM8974, APQ8084, etc. +diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile +index 93fd03f..d0d8e3d 100644 +--- a/drivers/clk/qcom/Makefile ++++ b/drivers/clk/qcom/Makefile +@@ -16,3 +16,4 @@ obj-$(CONFIG_MSM_GCC_8960) += gcc-msm8960.o + obj-$(CONFIG_MSM_GCC_8974) += gcc-msm8974.o + obj-$(CONFIG_MSM_MMCC_8960) += mmcc-msm8960.o + obj-$(CONFIG_MSM_MMCC_8974) += mmcc-msm8974.o ++obj-$(CONFIG_QCOM_HFPLL) += hfpll.o +diff --git a/drivers/clk/qcom/hfpll.c b/drivers/clk/qcom/hfpll.c +new file mode 100644 +index 0000000..701a377 +--- /dev/null ++++ b/drivers/clk/qcom/hfpll.c +@@ -0,0 +1,110 @@ ++/* ++ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved. ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 and ++ * only version 2 as published by the Free Software Foundation. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ */ ++ ++#include <linux/kernel.h> ++#include <linux/init.h> ++#include <linux/module.h> ++#include <linux/platform_device.h> ++#include <linux/of.h> ++#include <linux/clk.h> ++#include <linux/clk-provider.h> ++#include <linux/regmap.h> ++ ++#include "clk-regmap.h" ++#include "clk-hfpll.h" ++ ++static const struct hfpll_data hdata = { ++ .mode_reg = 0x00, ++ .l_reg = 0x04, ++ .m_reg = 0x08, ++ .n_reg = 0x0c, ++ .user_reg = 0x10, ++ .config_reg = 0x14, ++ .config_val = 0x430405d, ++ .status_reg = 0x1c, ++ .lock_bit = 16, ++ ++ .user_val = 0x8, ++ .user_vco_mask = 0x100000, ++ .low_vco_max_rate = 1248000000, ++ .min_rate = 537600000UL, ++ .max_rate = 2900000000UL, ++}; ++ ++static const struct of_device_id qcom_hfpll_match_table[] = { ++ { .compatible = "qcom,hfpll" }, ++ { } ++}; ++MODULE_DEVICE_TABLE(of, qcom_hfpll_match_table); ++ ++static struct regmap_config hfpll_regmap_config = { ++ .reg_bits = 32, ++ .reg_stride = 4, ++ .val_bits = 32, ++ .max_register = 0x30, ++ .fast_io = true, ++}; ++ ++static int qcom_hfpll_probe(struct platform_device *pdev) ++{ ++ struct clk *clk; ++ struct resource *res; ++ struct device *dev = &pdev->dev; ++ void __iomem *base; ++ struct regmap *regmap; ++ struct clk_hfpll *h; ++ struct clk_init_data init = { ++ .parent_names = (const char *[]){ "xo" }, ++ .num_parents = 1, ++ .ops = &clk_ops_hfpll, ++ }; ++ ++ h = devm_kzalloc(dev, sizeof(*h), GFP_KERNEL); ++ if (!h) ++ return -ENOMEM; ++ ++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ++ base = devm_ioremap_resource(dev, res); ++ if (IS_ERR(base)) ++ return PTR_ERR(base); ++ ++ regmap = devm_regmap_init_mmio(&pdev->dev, base, &hfpll_regmap_config); ++ if (IS_ERR(regmap)) ++ return PTR_ERR(regmap); ++ ++ if (of_property_read_string_index(dev->of_node, "clock-output-names", ++ 0, &init.name)) ++ return -ENODEV; ++ ++ h->d = &hdata; ++ h->clkr.hw.init = &init; ++ spin_lock_init(&h->lock); ++ ++ clk = devm_clk_register_regmap(&pdev->dev, &h->clkr); ++ ++ return PTR_ERR_OR_ZERO(clk); ++} ++ ++static struct platform_driver qcom_hfpll_driver = { ++ .probe = qcom_hfpll_probe, ++ .driver = { ++ .name = "qcom-hfpll", ++ .owner = THIS_MODULE, ++ .of_match_table = qcom_hfpll_match_table, ++ }, ++}; ++module_platform_driver(qcom_hfpll_driver); ++ ++MODULE_DESCRIPTION("QCOM HFPLL Clock Driver"); ++MODULE_LICENSE("GPL v2"); ++MODULE_ALIAS("platform:qcom-hfpll"); +-- +1.7.10.4 + |