/* SPDX-License-Identifier: BSD-3-Clause */
/*
* Copyright (c) 2020, MIPI Alliance, Inc.
*
* Author: Nicolas Pitre <[email protected]>
*
* Transfer Mode/Rate Table definitions as found in extended capability
* sections 0x04 and 0x08.
* This applies starting from I3C HCI v2.0.
*/
#ifndef XFER_MODE_RATE_H
#define XFER_MODE_RATE_H
/*
* Master Transfer Mode Table Fixed Indexes.
*
* Indexes 0x0 and 0x8 are mandatory. Availability for the rest must be
* obtained from the mode table in the extended capability area.
* Presence and definitions for indexes beyond these ones may vary.
*/
#define XFERMODE_IDX_I3C_SDR 0x00 /* I3C SDR Mode */
#define XFERMODE_IDX_I3C_HDR_DDR 0x01 /* I3C HDR-DDR Mode */
#define XFERMODE_IDX_I3C_HDR_T 0x02 /* I3C HDR-Ternary Mode */
#define XFERMODE_IDX_I3C_HDR_BT 0x03 /* I3C HDR-BT Mode */
#define XFERMODE_IDX_I2C 0x08 /* Legacy I2C Mode */
/*
* Transfer Mode Table Entry Bits Definitions
*/
#define XFERMODE_VALID_XFER_ADD_FUNC GENMASK(21, 16)
#define XFERMODE_ML_DATA_XFER_CODING GENMASK(15, 11)
#define XFERMODE_ML_ADDL_LANES GENMASK(10, 8)
#define XFERMODE_SUPPORTED BIT(7)
#define XFERMODE_MODE GENMASK(3, 0)
/*
* Master Data Transfer Rate Selector Values.
*
* These are the values to be used in the command descriptor XFER_RATE field
* and found in the RATE_ID field below.
* The I3C_SDR0, I3C_SDR1, I3C_SDR2, I3C_SDR3, I3C_SDR4 and I2C_FM rates
* are required, everything else is optional and discoverable in the
* Data Transfer Rate Table. Indicated are typical rates. The actual
* rates may vary slightly and are also specified in the Data Transfer
* Rate Table.
*/
#define XFERRATE_I3C_SDR0 0x00 /* 12.5 MHz */
#define XFERRATE_I3C_SDR1 0x01 /* 8 MHz */
#define XFERRATE_I3C_SDR2 0x02 /* 6 MHz */
#define XFERRATE_I3C_SDR3 0x03 /* 4 MHz */
#define XFERRATE_I3C_SDR4 0x04 /* 2 MHz */
#define XFERRATE_I3C_SDR_FM_FMP 0x05 /* 400 KHz / 1 MHz */
#define XFERRATE_I3C_SDR_USER6 0x06 /* User Defined */
#define XFERRATE_I3C_SDR_USER7 0x07 /* User Defined */
#define XFERRATE_I2C_FM 0x00 /* 400 KHz */
#define XFERRATE_I2C_FMP 0x01 /* 1 MHz */
#define XFERRATE_I2C_USER2 0x02 /* User Defined */
#define XFERRATE_I2C_USER3 0x03 /* User Defined */
#define XFERRATE_I2C_USER4 0x04 /* User Defined */
#define XFERRATE_I2C_USER5 0x05 /* User Defined */
#define XFERRATE_I2C_USER6 0x06 /* User Defined */
#define XFERRATE_I2C_USER7 0x07 /* User Defined */
/*
* Master Data Transfer Rate Table Mode ID values.
*/
#define XFERRATE_MODE_I3C 0x00
#define XFERRATE_MODE_I2C 0x08
/*
* Master Data Transfer Rate Table Entry Bits Definitions
*/
#define XFERRATE_MODE_ID GENMASK(31, 28)
#define XFERRATE_RATE_ID GENMASK(22, 20)
#define XFERRATE_ACTUAL_RATE_KHZ GENMASK(19, 0)
#endif
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