xref: /openbmc/linux/include/linux/can/platform/cc770.h (revision b2441318)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _CAN_PLATFORM_CC770_H
3 #define _CAN_PLATFORM_CC770_H
4 
5 /* CPU Interface Register (0x02) */
6 #define CPUIF_CEN	0x01	/* Clock Out Enable */
7 #define CPUIF_MUX	0x04	/* Multiplex */
8 #define CPUIF_SLP	0x08	/* Sleep */
9 #define CPUIF_PWD	0x10	/* Power Down Mode */
10 #define CPUIF_DMC	0x20	/* Divide Memory Clock */
11 #define CPUIF_DSC	0x40	/* Divide System Clock */
12 #define CPUIF_RST	0x80	/* Hardware Reset Status */
13 
14 /* Clock Out Register (0x1f) */
15 #define CLKOUT_CD_MASK  0x0f	/* Clock Divider mask */
16 #define CLKOUT_SL_MASK	0x30	/* Slew Rate mask */
17 #define CLKOUT_SL_SHIFT	4
18 
19 /* Bus Configuration Register (0x2f) */
20 #define BUSCFG_DR0	0x01	/* Disconnect RX0 Input / Select RX input */
21 #define BUSCFG_DR1	0x02	/* Disconnect RX1 Input / Silent mode */
22 #define BUSCFG_DT1	0x08	/* Disconnect TX1 Output */
23 #define BUSCFG_POL	0x20	/* Polarity dominant or recessive */
24 #define BUSCFG_CBY	0x40	/* Input Comparator Bypass */
25 
26 struct cc770_platform_data {
27 	u32 osc_freq;	/* CAN bus oscillator frequency in Hz */
28 
29 	u8 cir;		/* CPU Interface Register */
30 	u8 cor;		/* Clock Out Register */
31 	u8 bcr;		/* Bus Configuration Register */
32 };
33 
34 #endif	/* !_CAN_PLATFORM_CC770_H */
35