u-boot-brain/drivers/clk/at91/pmc.h

/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * Copyright (C) 2016 Atmel Corporation
 *               Wenyou.Yang <wenyou.yang@atmel.com>
 */

#ifndef __AT91_PMC_H__
#define __AT91_PMC_H__

#include <regmap.h>

struct pmc_platdata {
	struct at91_pmc *reg_base;
	struct regmap *regmap_sfr;
};

int at91_pmc_core_probe(struct udevice *dev);
int at91_clk_sub_device_bind(struct udevice *dev, const char *drv_name);

int at91_clk_of_xlate(struct clk *clk, struct ofnode_phandle_args *args);
int at91_clk_probe(struct udevice *dev);

#endif
SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com> 2018-05-07 06:58:06 +09:00			`/* SPDX-License-Identifier: GPL-2.0+ */`
clk: at91: Add clock driver The patch is referred to at91 clock driver of Linux, to make the clock node descriptions in DT aligned with the Linux's. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Reviewed-by: Simon Glass <sjg@chromium.org> 2016-07-20 18:55:12 +09:00			`/*`
			`* Copyright (C) 2016 Atmel Corporation`
			`* Wenyou.Yang <wenyou.yang@atmel.com>`
			`*/`

			`#ifndef __AT91_PMC_H__`
			`#define __AT91_PMC_H__`

clk: at91: utmi: Set the reference clock frequency By default, it is assumed that the UTMI clock is generated from a 12 MHz reference clock (MAINCK). If it's not the case, the FREQ field of the SFR_UTMICKTRIM has to be updated to generate the UTMI clock in the proper way. The UTMI clock has a fixed rate of 480 MHz. In fact, there is no multiplier we can configure. The multiplier is managed internally, depending on the reference clock frequency, to achieve the target of 480 MHz. The patch is cloned from the patch of mailing-list: [PATCH v2] clk: at91: utmi: set the mainck rate Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com> [trini: Depend on SPL_DM] Signed-off-by: Tom Rini <trini@konsulko.com> 2017-09-05 19:30:07 +09:00			`#include <regmap.h>`

clk: at91: Add clock driver The patch is referred to at91 clock driver of Linux, to make the clock node descriptions in DT aligned with the Linux's. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Reviewed-by: Simon Glass <sjg@chromium.org> 2016-07-20 18:55:12 +09:00			`struct pmc_platdata {`
			`struct at91_pmc *reg_base;`
clk: at91: utmi: Set the reference clock frequency By default, it is assumed that the UTMI clock is generated from a 12 MHz reference clock (MAINCK). If it's not the case, the FREQ field of the SFR_UTMICKTRIM has to be updated to generate the UTMI clock in the proper way. The UTMI clock has a fixed rate of 480 MHz. In fact, there is no multiplier we can configure. The multiplier is managed internally, depending on the reference clock frequency, to achieve the target of 480 MHz. The patch is cloned from the patch of mailing-list: [PATCH v2] clk: at91: utmi: set the mainck rate Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com> [trini: Depend on SPL_DM] Signed-off-by: Tom Rini <trini@konsulko.com> 2017-09-05 19:30:07 +09:00			`struct regmap *regmap_sfr;`
clk: at91: Add clock driver The patch is referred to at91 clock driver of Linux, to make the clock node descriptions in DT aligned with the Linux's. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Reviewed-by: Simon Glass <sjg@chromium.org> 2016-07-20 18:55:12 +09:00			`};`

			`int at91_pmc_core_probe(struct udevice *dev);`
clk: at91: Improve the clock implementation For the peripheral clock, provide the clock ops for the clock provider, such as spi0_clk. The .of_xlate is to get the clk->id, the .enable is to enable the spi0 peripheral clock, the .get_rate is to get the clock frequency. The driver for periph32ck node is responsible for recursively binding its children as clk devices, not provide the clock ops. So do the generated clock and system clock. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Acked-by: Stephen Warren <swarren@nvidia.com> 2016-09-27 12:00:29 +09:00			`int at91_clk_sub_device_bind(struct udevice dev, const char drv_name);`

clk: Modify xlate() method for livetree Update the xlate() method to use ofnode_phandle_args instead of the fdtdec variant. This will allow drivers to support a live device tree. Signed-off-by: Simon Glass <sjg@chromium.org> 2017-05-19 11:09:40 +09:00			`int at91_clk_of_xlate(struct clk clk, struct ofnode_phandle_args args);`
clk: at91: Improve the clock implementation For the peripheral clock, provide the clock ops for the clock provider, such as spi0_clk. The .of_xlate is to get the clk->id, the .enable is to enable the spi0 peripheral clock, the .get_rate is to get the clock frequency. The driver for periph32ck node is responsible for recursively binding its children as clk devices, not provide the clock ops. So do the generated clock and system clock. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Acked-by: Stephen Warren <swarren@nvidia.com> 2016-09-27 12:00:29 +09:00			`int at91_clk_probe(struct udevice *dev);`
clk: at91: Add clock driver The patch is referred to at91 clock driver of Linux, to make the clock node descriptions in DT aligned with the Linux's. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Reviewed-by: Simon Glass <sjg@chromium.org> 2016-07-20 18:55:12 +09:00
			`#endif`