On Mon, Jun 22, 2015 at 09:53:59PM +0800, Daniel Kurtz wrote: > On Mon, Jun 22, 2015 at 2:35 PM, Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> wrote: > > This adds a power domain driver for the Mediatek SCPSYS unit. > > > > The System Control Processor System (SCPSYS) has several power > > management related tasks in the system. The tasks include thermal > > measurement, dynamic voltage frequency scaling (DVFS), interrupt > > filter and lowlevel sleep control. The System Power Manager (SPM) > > inside the SCPSYS is for the MTCMOS power domain control. > > > > For now this driver only adds power domain support, the more > > advanced features are not yet supported. The driver implements > > the generic PM domain device tree bindings, the first user will > > most likely be the Mediatek AFE audio driver. > > > > Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> > > --- > > drivers/soc/mediatek/Kconfig | 10 + > > drivers/soc/mediatek/Makefile | 1 + > > drivers/soc/mediatek/mtk-scpsys.c | 487 +++++++++++++++++++++++++++++++ > > include/dt-bindings/power/mt8173-power.h | 15 + > > 4 files changed, 513 insertions(+) > > create mode 100644 drivers/soc/mediatek/mtk-scpsys.c > > create mode 100644 include/dt-bindings/power/mt8173-power.h > > > > diff --git a/drivers/soc/mediatek/Kconfig b/drivers/soc/mediatek/Kconfig > > index e4f37a3..32eff1b 100644 > > --- a/drivers/soc/mediatek/Kconfig > > +++ b/drivers/soc/mediatek/Kconfig > > @@ -18,3 +18,13 @@ config MTK_PMIC_WRAP > > Say yes here to add support for MediaTek PMIC Wrapper found > > on different MediaTek SoCs. The PMIC wrapper is a proprietary > > hardware to connect the PMIC. > > + > > +config MTK_SCPSYS > > + bool "MediaTek SCPSYS Support" > > + depends on ARCH_MEDIATEK || COMPILE_TEST > > + select REGMAP > > + select MTK_INFRACFG > > + select PM_GENERIC_DOMAINS if PM > > + help > > + Say yes here to add support for the MediaTek SCPSYS power domain > > + driver. > > diff --git a/drivers/soc/mediatek/Makefile b/drivers/soc/mediatek/Makefile > > index 3fa940f..12998b0 100644 > > --- a/drivers/soc/mediatek/Makefile > > +++ b/drivers/soc/mediatek/Makefile > > @@ -1,2 +1,3 @@ > > obj-$(CONFIG_MTK_INFRACFG) += mtk-infracfg.o > > obj-$(CONFIG_MTK_PMIC_WRAP) += mtk-pmic-wrap.o > > +obj-$(CONFIG_MTK_SCPSYS) += mtk-scpsys.o > > diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c > > new file mode 100644 > > index 0000000..84c306a > > --- /dev/null > > +++ b/drivers/soc/mediatek/mtk-scpsys.c > > @@ -0,0 +1,487 @@ > > +/* > > + * Copyright (c) 2015 Pengutronix, Sascha Hauer <kernel@xxxxxxxxxxxxxx> > > + * > > + * This program is free software; you can redistribute it and/or modify > > + * it under the terms of the GNU General Public License 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/clk.h> > > +#include <linux/delay.h> > > +#include <linux/io.h> > > +#include <linux/kernel.h> > > +#include <linux/mfd/syscon.h> > > +#include <linux/of_device.h> > > +#include <linux/platform_device.h> > > +#include <linux/pm_domain.h> > > +#include <linux/regmap.h> > > +#include <linux/soc/mediatek/infracfg.h> > > +#include <dt-bindings/power/mt8173-power.h> > > + > > +#define SPM_VDE_PWR_CON 0x0210 > > +#define SPM_MFG_PWR_CON 0x0214 > > +#define SPM_VEN_PWR_CON 0x0230 > > +#define SPM_ISP_PWR_CON 0x0238 > > +#define SPM_DIS_PWR_CON 0x023c > > +#define SPM_VEN2_PWR_CON 0x0298 > > +#define SPM_AUDIO_PWR_CON 0x029c > > +#define SPM_MFG_2D_PWR_CON 0x02c0 > > +#define SPM_MFG_ASYNC_PWR_CON 0x02c4 > > +#define SPM_USB_PWR_CON 0x02cc > > +#define SPM_PWR_STATUS 0x060c > > +#define SPM_PWR_STATUS_2ND 0x0610 > > + > > +#define PWR_RST_B_BIT BIT(0) > > +#define PWR_ISO_BIT BIT(1) > > +#define PWR_ON_BIT BIT(2) > > +#define PWR_ON_2ND_BIT BIT(3) > > +#define PWR_CLK_DIS_BIT BIT(4) > > + > > +#define PWR_STATUS_DISP BIT(3) > > +#define PWR_STATUS_MFG BIT(4) > > +#define PWR_STATUS_ISP BIT(5) > > +#define PWR_STATUS_VDEC BIT(7) > > +#define PWR_STATUS_VENC_LT BIT(20) > > +#define PWR_STATUS_VENC BIT(21) > > +#define PWR_STATUS_MFG_2D BIT(22) > > +#define PWR_STATUS_MFG_ASYNC BIT(23) > > +#define PWR_STATUS_AUDIO BIT(24) > > +#define PWR_STATUS_USB BIT(25) > > + > > +enum clk_id { > > + MT8173_CLK_NONE, > > + MT8173_CLK_MM, > > + MT8173_CLK_MFG, > > + MT8173_CLK_MAX = MT8173_CLK_MFG, > > This sets MT8173_CLK_MAX = 2 ... > > > +static int __init scpsys_probe(struct platform_device *pdev) > > +{ > > + struct genpd_onecell_data *pd_data; > > + struct resource *res; > > + int i, ret; > > + struct scp *scp; > > + struct clk *clk[MT8173_CLK_MAX]; > > So ARRAY_SIZE(clk) == 2 ... > > > + clk[MT8173_CLK_MFG] = devm_clk_get(&pdev->dev, "mfg"); > > and here... > clk[MT8173_CLK_MFG] == clk[2] Oh, damn. I can fix that by reordering the enum to: enum clk_id { MT8173_CLK_MM, MT8173_CLK_MFG, MT8173_CLK_NONE, MT8173_CLK_MAX = MT8173_CLK_NONE, }; Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | -- To unsubscribe from this list: send the line "unsubscribe devicetree" in