blob: 113f258756cc6962efbdf644ad314199e338b826 [file] [log] [blame]
Prafulla Wadaskar5710de42009-05-30 01:13:33 +05301/*
2 * (C) Copyright 2009
3 * Marvell Semiconductor <www.marvell.com>
4 * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
5 *
6 * Derived from drivers/spi/mpc8xxx_spi.c
7 *
8 * See file CREDITS for list of people who contributed to this
9 * project.
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
24 * MA 02110-1301 USA
25 */
26
27#ifndef __KW_SPI_H__
28#define __KW_SPI_H__
29
30/* SPI Registers on kirkwood SOC */
31struct kwspi_registers {
32 u32 ctrl; /* 0x10600 */
33 u32 cfg; /* 0x10604 */
34 u32 dout; /* 0x10608 */
35 u32 din; /* 0x1060c */
36 u32 irq_cause; /* 0x10610 */
37 u32 irq_mask; /* 0x10614 */
38};
39
Valentin Longchampac486e32012-06-01 01:31:02 +000040/* They are used to define CONFIG_SYS_KW_SPI_MPP
41 * each of the below #defines selects which mpp is
42 * configured for each SPI signal in spi_claim_bus
43 * bit 0: selects pin for MOSI (MPP1 if 0, MPP6 if 1)
44 * bit 1: selects pin for SCK (MPP2 if 0, MPP10 if 1)
45 * bit 2: selects pin for MISO (MPP3 if 0, MPP11 if 1)
46 */
47#define MOSI_MPP6 (1 << 0)
48#define SCK_MPP10 (1 << 1)
49#define MISO_MPP11 (1 << 2)
50
Prafulla Wadaskar5710de42009-05-30 01:13:33 +053051#define KWSPI_CLKPRESCL_MASK 0x1f
Valentin Longchamp8203b202012-08-15 05:31:49 +000052#define KWSPI_CLKPRESCL_MIN 0x12
Prafulla Wadaskar5710de42009-05-30 01:13:33 +053053#define KWSPI_CSN_ACT 1 /* Activates serial memory interface */
54#define KWSPI_SMEMRDY (1 << 1) /* SerMem Data xfer ready */
55#define KWSPI_IRQUNMASK 1 /* unmask SPI interrupt */
56#define KWSPI_IRQMASK 0 /* mask SPI interrupt */
57#define KWSPI_SMEMRDIRQ 1 /* SerMem data xfer ready irq */
58#define KWSPI_XFERLEN_1BYTE 0
59#define KWSPI_XFERLEN_2BYTE (1 << 5)
60#define KWSPI_XFERLEN_MASK (1 << 5)
61#define KWSPI_ADRLEN_1BYTE 0
62#define KWSPI_ADRLEN_2BYTE 1 << 8
63#define KWSPI_ADRLEN_3BYTE 2 << 8
64#define KWSPI_ADRLEN_4BYTE 3 << 8
65#define KWSPI_ADRLEN_MASK 3 << 8
66#define KWSPI_TIMEOUT 10000
67
68#endif /* __KW_SPI_H__ */