power: domain: Introduce driver for raw TI K3 PDs

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>

1 files changed, 76 insertions, 0 deletions

diff --git a/include/k3-dev.h b/include/k3-dev.h
new file mode 100644
index 00000000000..de3a8bdf9eb
--- /dev/null
+++ b/include/k3-dev.h
@@ -0,0 +1,76 @@
+/* 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