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Since many platforms may need different pad configuration required depending on variation of the platform with minor deltas, it is easier to maintain a sub step based approach to allow for pin mux and iodelay configuration which may depend on the platform variations and need to be done in IO isolation. While we retain the older __recalibrate_iodelay function which provides a ready sequencing, __recalibrate_iodelay_start and __recalibrate_iodelay_end may be alternatively used now and the callers will be responsible for the correct sequencing of operations. Signed-off-by: Nishanth Menon <nm@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
89 lines
2.4 KiB
C
89 lines
2.4 KiB
C
/*
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* (C) Copyright 2015
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* Texas Instruments Incorporated
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*
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* Lokesh Vutla <lokeshvutla@ti.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _DRA7_IODELAY_H_
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#define _DRA7_IODELAY_H_
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#include <common.h>
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#include <asm/arch/sys_proto.h>
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/* CONFIG_REG_0 */
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#define CFG_REG_0_OFFSET 0xC
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#define CFG_REG_ROM_READ_SHIFT 1
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#define CFG_REG_ROM_READ_MASK (1 << 1)
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#define CFG_REG_CALIB_STRT_SHIFT 0
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#define CFG_REG_CALIB_STRT_MASK (1 << 0)
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#define CFG_REG_CALIB_STRT 1
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#define CFG_REG_CALIB_END 0
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#define CFG_REG_ROM_READ_START (1 << 1)
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#define CFG_REG_ROM_READ_END (0 << 1)
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/* CONFIG_REG_2 */
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#define CFG_REG_2_OFFSET 0x14
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#define CFG_REG_REFCLK_PERIOD_SHIFT 0
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#define CFG_REG_REFCLK_PERIOD_MASK (0xFFFF << 0)
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#define CFG_REG_REFCLK_PERIOD 0x2EF
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/* CONFIG_REG_8 */
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#define CFG_REG_8_OFFSET 0x2C
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#define CFG_IODELAY_UNLOCK_KEY 0x0000AAAA
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#define CFG_IODELAY_LOCK_KEY 0x0000AAAB
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/* CONFIG_REG_3/4 */
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#define CFG_REG_3_OFFSET 0x18
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#define CFG_REG_4_OFFSET 0x1C
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#define CFG_REG_DLY_CNT_SHIFT 16
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#define CFG_REG_DLY_CNT_MASK (0xFFFF << 16)
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#define CFG_REG_REF_CNT_SHIFT 0
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#define CFG_REG_REF_CNT_MASK (0xFFFF << 0)
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/* CTRL_CORE_SMA_SW_0 */
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#define CTRL_ISOLATE_SHIFT 2
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#define CTRL_ISOLATE_MASK (1 << 2)
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#define ISOLATE_IO 1
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#define DEISOLATE_IO 0
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/* CTRL_CORE_SMA_SW_1 */
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#define RGMII2_ID_MODE_N_MASK (1 << 26)
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#define RGMII1_ID_MODE_N_MASK (1 << 25)
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/* PRM_IO_PMCTRL */
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#define PMCTRL_ISOCLK_OVERRIDE_SHIFT 0
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#define PMCTRL_ISOCLK_OVERRIDE_MASK (1 << 0)
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#define PMCTRL_ISOCLK_STATUS_SHIFT 1
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#define PMCTRL_ISOCLK_STATUS_MASK (1 << 1)
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#define PMCTRL_ISOCLK_OVERRIDE_CTRL 1
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#define PMCTRL_ISOCLK_NOT_OVERRIDE_CTRL 0
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#define ERR_CALIBRATE_IODELAY 0x1
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#define ERR_DEISOLATE_IO 0x2
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#define ERR_ISOLATE_IO 0x4
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#define ERR_UPDATE_DELAY 0x8
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#define ERR_CPDE 0x3
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#define ERR_FPDE 0x5
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/* CFG_XXX */
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#define CFG_X_SIGNATURE_SHIFT 12
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#define CFG_X_SIGNATURE_MASK (0x3F << 12)
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#define CFG_X_LOCK_SHIFT 10
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#define CFG_X_LOCK_MASK (0x1 << 10)
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#define CFG_X_COARSE_DLY_SHIFT 5
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#define CFG_X_COARSE_DLY_MASK (0x1F << 5)
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#define CFG_X_FINE_DLY_SHIFT 0
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#define CFG_X_FINE_DLY_MASK (0x1F << 0)
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#define CFG_X_SIGNATURE 0x29
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#define CFG_X_LOCK 1
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void __recalibrate_iodelay(struct pad_conf_entry const *pad, int npads,
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struct iodelay_cfg_entry const *iodelay,
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int niodelays);
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int __recalibrate_iodelay_start(void);
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void __recalibrate_iodelay_end(int ret);
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#endif
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