diff options
Diffstat (limited to 'target/linux/ipq806x/patches-5.4/0034-0008-clk-qcom-Add-KPSS-ACC-GCC-driver.patch')
| -rw-r--r-- | target/linux/ipq806x/patches-5.4/0034-0008-clk-qcom-Add-KPSS-ACC-GCC-driver.patch | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches-5.4/0034-0008-clk-qcom-Add-KPSS-ACC-GCC-driver.patch b/target/linux/ipq806x/patches-5.4/0034-0008-clk-qcom-Add-KPSS-ACC-GCC-driver.patch new file mode 100644 index 0000000000..aa19ea2e3f --- /dev/null +++ b/target/linux/ipq806x/patches-5.4/0034-0008-clk-qcom-Add-KPSS-ACC-GCC-driver.patch @@ -0,0 +1,134 @@ +From 3ddc3564d3c9f097986bd4ccbe34152413811335 Mon Sep 17 00:00:00 2001 +From: Stephen Boyd <sboyd@codeaurora.org> +Date: Tue, 14 Aug 2018 17:42:27 +0530 +Subject: [PATCH 08/12] clk: qcom: Add KPSS ACC/GCC driver + +The ACC and GCC regions present in KPSSv1 contain registers to +control clocks and power to each Krait CPU and L2. For CPUfreq +purposes probe these devices and expose a mux clock that chooses +between PXO and PLL8. + +Cc: <devicetree@vger.kernel.org> +Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> +Signed-off-by: Sricharan R <sricharan@codeaurora.org> +Tested-by: Craig Tatlor <ctatlor97@gmail.com> +Signed-off-by: Stephen Boyd <sboyd@kernel.org> +--- + drivers/clk/qcom/Kconfig | 8 ++++ + drivers/clk/qcom/Makefile | 1 + + drivers/clk/qcom/kpss-xcc.c | 87 +++++++++++++++++++++++++++++++++++++ + 3 files changed, 96 insertions(+) + create mode 100644 drivers/clk/qcom/kpss-xcc.c + +--- a/drivers/clk/qcom/Kconfig ++++ b/drivers/clk/qcom/Kconfig +@@ -284,3 +284,11 @@ config QCOM_HFPLL + 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. ++ ++config KPSS_XCC ++ tristate "KPSS Clock Controller" ++ depends on COMMON_CLK_QCOM ++ help ++ Support for the Krait ACC and GCC clock controllers. Say Y ++ if you want to support CPU frequency scaling on devices such ++ as MSM8960, APQ8064, etc. +--- a/drivers/clk/qcom/Makefile ++++ b/drivers/clk/qcom/Makefile +@@ -45,4 +45,5 @@ obj-$(CONFIG_SDM_DISPCC_845) += dispcc-s + obj-$(CONFIG_SDM_GCC_845) += gcc-sdm845.o + obj-$(CONFIG_SDM_VIDEOCC_845) += videocc-sdm845.o + obj-$(CONFIG_SPMI_PMIC_CLKDIV) += clk-spmi-pmic-div.o ++obj-$(CONFIG_KPSS_XCC) += kpss-xcc.o + obj-$(CONFIG_QCOM_HFPLL) += hfpll.o +--- /dev/null ++++ b/drivers/clk/qcom/kpss-xcc.c +@@ -0,0 +1,87 @@ ++// SPDX-License-Identifier: GPL-2.0 ++// Copyright (c) 2018, The Linux Foundation. All rights reserved. ++ ++#include <linux/kernel.h> ++#include <linux/init.h> ++#include <linux/module.h> ++#include <linux/platform_device.h> ++#include <linux/err.h> ++#include <linux/io.h> ++#include <linux/of.h> ++#include <linux/of_device.h> ++#include <linux/clk.h> ++#include <linux/clk-provider.h> ++ ++static const char *aux_parents[] = { ++ "pll8_vote", ++ "pxo", ++}; ++ ++static unsigned int aux_parent_map[] = { ++ 3, ++ 0, ++}; ++ ++static const struct of_device_id kpss_xcc_match_table[] = { ++ { .compatible = "qcom,kpss-acc-v1", .data = (void *)1UL }, ++ { .compatible = "qcom,kpss-gcc" }, ++ {} ++}; ++MODULE_DEVICE_TABLE(of, kpss_xcc_match_table); ++ ++static int kpss_xcc_driver_probe(struct platform_device *pdev) ++{ ++ const struct of_device_id *id; ++ struct clk *clk; ++ struct resource *res; ++ void __iomem *base; ++ const char *name; ++ ++ id = of_match_device(kpss_xcc_match_table, &pdev->dev); ++ if (!id) ++ return -ENODEV; ++ ++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ++ base = devm_ioremap_resource(&pdev->dev, res); ++ if (IS_ERR(base)) ++ return PTR_ERR(base); ++ ++ if (id->data) { ++ if (of_property_read_string_index(pdev->dev.of_node, ++ "clock-output-names", ++ 0, &name)) ++ return -ENODEV; ++ base += 0x14; ++ } else { ++ name = "acpu_l2_aux"; ++ base += 0x28; ++ } ++ ++ clk = clk_register_mux_table(&pdev->dev, name, aux_parents, ++ ARRAY_SIZE(aux_parents), 0, base, 0, 0x3, ++ 0, aux_parent_map, NULL); ++ ++ platform_set_drvdata(pdev, clk); ++ ++ return PTR_ERR_OR_ZERO(clk); ++} ++ ++static int kpss_xcc_driver_remove(struct platform_device *pdev) ++{ ++ clk_unregister_mux(platform_get_drvdata(pdev)); ++ return 0; ++} ++ ++static struct platform_driver kpss_xcc_driver = { ++ .probe = kpss_xcc_driver_probe, ++ .remove = kpss_xcc_driver_remove, ++ .driver = { ++ .name = "kpss-xcc", ++ .of_match_table = kpss_xcc_match_table, ++ }, ++}; ++module_platform_driver(kpss_xcc_driver); ++ ++MODULE_DESCRIPTION("Krait Processor Sub System (KPSS) Clock Driver"); ++MODULE_LICENSE("GPL v2"); ++MODULE_ALIAS("platform:kpss-xcc"); |