+++ /dev/null
-Content-Type: text/plain; charset="utf-8"
-MIME-Version: 1.0
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-Subject: [v3,06/13] clk: qcom: Add HFPLL driver
-From: Stephen Boyd <sboyd@codeaurora.org>
-X-Patchwork-Id: 6063231
-Message-Id: <1426920332-9340-7-git-send-email-sboyd@codeaurora.org>
-To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org>
-Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
- linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
- Viresh Kumar <viresh.kumar@linaro.org>, <devicetree@vger.kernel.org>
-Date: Fri, 20 Mar 2015 23:45:25 -0700
-
-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.
-
-Cc: <devicetree@vger.kernel.org>
-Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
-
----
-.../devicetree/bindings/clock/qcom,hfpll.txt | 40 ++++++++
- drivers/clk/qcom/Kconfig | 8 ++
- drivers/clk/qcom/Makefile | 1 +
- drivers/clk/qcom/hfpll.c | 109 +++++++++++++++++++++
- 4 files changed, 158 insertions(+)
- create mode 100644 Documentation/devicetree/bindings/clock/qcom,hfpll.txt
- create mode 100644 drivers/clk/qcom/hfpll.c
-
---- /dev/null
-+++ b/Documentation/devicetree/bindings/clock/qcom,hfpll.txt
-@@ -0,0 +1,40 @@
-+High-Frequency PLL (HFPLL)
-+
-+PROPERTIES
-+
-+- compatible:
-+ Usage: required
-+ Value type: <string>
-+ Definition: must be "qcom,hfpll"
-+
-+- reg:
-+ Usage: required
-+ Value type: <prop-encoded-array>
-+ Definition: address and size of HPLL registers. An optional second
-+ element specifies the address and size of the alias
-+ register region.
-+
-+- clock-output-names:
-+ Usage: required
-+ Value type: <string>
-+ Definition: Name of the PLL. Typically hfpllX where X is a CPU number
-+ starting at 0. Otherwise hfpll_Y where Y is more specific
-+ such as "l2".
-+
-+Example:
-+
-+1) An HFPLL for the L2 cache.
-+
-+ clock-controller@f9016000 {
-+ compatible = "qcom,hfpll";
-+ reg = <0xf9016000 0x30>;
-+ clock-output-names = "hfpll_l2";
-+ };
-+
-+2) An HFPLL for CPU0. This HFPLL has the alias register region.
-+
-+ clock-controller@f908a000 {
-+ compatible = "qcom,hfpll";
-+ reg = <0xf908a000 0x30>, <0xf900a000 0x30>;
-+ clock-output-names = "hfpll0";
-+ };
---- a/drivers/clk/qcom/Kconfig
-+++ b/drivers/clk/qcom/Kconfig
-@@ -135,3 +135,11 @@ 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.
---- a/drivers/clk/qcom/Makefile
-+++ b/drivers/clk/qcom/Makefile
-@@ -25,3 +25,4 @@ obj-$(CONFIG_MSM_MMCC_8960) += mmcc-msm8
- obj-$(CONFIG_MSM_MMCC_8974) += mmcc-msm8974.o
- obj-$(CONFIG_QCOM_CLK_SMD_RPM) += clk-smd-rpm.o
- obj-$(CONFIG_QCOM_CLK_RPM) += clk-rpm.o
-+obj-$(CONFIG_QCOM_HFPLL) += hfpll.o
---- /dev/null
-+++ b/drivers/clk/qcom/hfpll.c
-@@ -0,0 +1,109 @@
-+/*
-+ * 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 const 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",
-+ .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");
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