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power: domain: Introduce driver for raw TI K3 PDs

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Normally, power domains are handled via TI-SCI in K3 SoCs. However,
SPL is not going to have access to sysfw resources, so it must control
them directly. Add driver for supporting this.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tero Kristo <kristo@kernel.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
This commit is contained in:
Tero Kristo 2021-06-11 11:45:15 +03:00 • committed by Lokesh Vutla
parent b4a72a9f5b
commit 144464bd2c
4 changed files with 452 additions and 0 deletions
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76
include/k3-dev.h Normal file
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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Texas Instruments K3 Device Platform Data
*
* Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
*/
#ifndef __K3_DEV_H__
#define __K3_DEV_H__
#include <asm/io.h>
#include <linux/types.h>
#include <stdint.h>
#define LPSC_MODULE_EXISTS BIT(0)
#define LPSC_NO_CLOCK_GATING BIT(1)
#define LPSC_DEPENDS BIT(2)
#define LPSC_HAS_RESET_ISO BIT(3)
#define LPSC_HAS_LOCAL_RESET BIT(4)
#define LPSC_NO_MODULE_RESET BIT(5)
#define PSC_PD_EXISTS BIT(0)
#define PSC_PD_ALWAYSON BIT(1)
#define PSC_PD_DEPENDS BIT(2)
struct ti_psc {
int id;
void __iomem *base;
};
struct ti_pd;
struct ti_pd {
int id;
int usecount;
struct ti_psc *psc;
struct ti_pd *depend;
};
struct ti_lpsc;
struct ti_lpsc {
int id;
int usecount;
struct ti_psc *psc;
struct ti_pd *pd;
struct ti_lpsc *depend;
};
struct ti_dev {
struct ti_lpsc *lpsc;
int id;
};
/**
* struct ti_k3_pd_platdata - pm domain controller information structure
*/
struct ti_k3_pd_platdata {
struct ti_psc *psc;
struct ti_pd *pd;
struct ti_lpsc *lpsc;
struct ti_dev *devs;
int num_psc;
int num_pd;
int num_lpsc;
int num_devs;
};
#define PSC(_id, _base) { .id = _id, .base = (void *)_base, }
#define PSC_PD(_id, _psc, _depend) { .id = _id, .psc = _psc, .depend = _depend }
#define PSC_LPSC(_id, _psc, _pd, _depend) { .id = _id, .psc = _psc, .pd = _pd, .depend = _depend }
#define PSC_DEV(_id, _lpsc) { .id = _id, .lpsc = _lpsc }
extern const struct ti_k3_pd_platdata j721e_pd_platdata;
extern const struct ti_k3_pd_platdata j7200_pd_platdata;
#endif