-
Notifications
You must be signed in to change notification settings - Fork 3.5k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge patch series "Update PHYTEC SOM Detection"
Daniel Schultz <d.schultz@phytec.de> says: This patch series extends PHYTEC's SOM detection by minor fixes, a generic helper function and a new valid flag. Moreover, it adds a module to provide access to the SOM detection for our TI AM6 products.
- Loading branch information
Showing
9 changed files
with
314 additions
and
34 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,159 @@ | ||
// SPDX-License-Identifier: GPL-2.0+ | ||
/* | ||
* Copyright (C) 2024 PHYTEC Messtechnik GmbH | ||
* Author: Daniel Schultz <d.schultz@phytec.de> | ||
*/ | ||
|
||
#include <asm/arch/hardware.h> | ||
|
||
#include "am6_som_detection.h" | ||
|
||
extern struct phytec_eeprom_data eeprom_data; | ||
|
||
#if IS_ENABLED(CONFIG_PHYTEC_AM62_SOM_DETECTION) || \ | ||
IS_ENABLED(CONFIG_PHYTEC_AM64_SOM_DETECTION) | ||
|
||
/* Check if the SoM is actually one of the following products: | ||
* - phyCORE-AM62x | ||
* - phyCORE-AM64x | ||
* | ||
* Returns 0 in case it's a known SoM. Otherwise, returns -1. | ||
*/ | ||
int phytec_am6_detect(struct phytec_eeprom_data *data) | ||
{ | ||
char *opt; | ||
u8 som; | ||
|
||
if (!data) | ||
data = &eeprom_data; | ||
|
||
/* We cannot do the check for early API revisions */ | ||
if (!data->valid || data->payload.api_rev < PHYTEC_API_REV2) | ||
return -1; | ||
|
||
som = data->payload.data.data_api2.som_no; | ||
debug("%s: som id: %u\n", __func__, som); | ||
|
||
opt = phytec_get_opt(data); | ||
if (!opt) | ||
return -1; | ||
|
||
if (som == PHYTEC_AM62X_SOM && soc_is_am62x()) | ||
return 0; | ||
|
||
if (som == PHYTEC_AM64X_SOM && soc_is_am64x()) | ||
return 0; | ||
|
||
return -1; | ||
} | ||
|
||
static u8 phytec_check_opt(struct phytec_eeprom_data *data, u8 option) | ||
{ | ||
char *opt; | ||
|
||
if (!data) | ||
data = &eeprom_data; | ||
|
||
if (!data->valid || data->payload.api_rev < PHYTEC_API_REV2) | ||
return PHYTEC_EEPROM_INVAL; | ||
|
||
if (option > 8) | ||
return PHYTEC_EEPROM_INVAL; | ||
|
||
opt = phytec_get_opt(data); | ||
if (opt) | ||
return PHYTEC_GET_OPTION(opt[option]); | ||
return PHYTEC_EEPROM_INVAL; | ||
} | ||
|
||
/* | ||
* Reads LPDDR4 ram size from EEPROM. | ||
* | ||
* returns: | ||
* - The size | ||
* - PHYTEC_EEPROM_INVAL when the data is invalid. | ||
*/ | ||
u8 __maybe_unused phytec_get_am62_ddr_size(struct phytec_eeprom_data *data) | ||
{ | ||
u8 ddr_id = phytec_check_opt(data, 3); | ||
|
||
pr_debug("%s: ddr id: %u\n", __func__, ddr_id); | ||
return ddr_id; | ||
} | ||
|
||
/* | ||
* Reads SPI-NOR flash size and type from EEPROM. | ||
* | ||
* returns: | ||
* - PHYTEC_EEPROM_VALUE_X if no SPI is poulated. | ||
* - Otherwise a board depended code for the size. | ||
* - PHYTEC_EEPROM_INVAL when the data is invalid. | ||
*/ | ||
u8 __maybe_unused phytec_get_am62_spi(struct phytec_eeprom_data *data) | ||
{ | ||
u8 spi = phytec_check_opt(data, 5); | ||
|
||
pr_debug("%s: spi: %u\n", __func__, spi); | ||
return spi; | ||
} | ||
|
||
/* | ||
* Reads Ethernet phy information from EEPROM. | ||
* | ||
* returns: | ||
* - 0x0 no ethernet phy is populated. | ||
* - 0x1 if 10/100/1000 MBit Phy is populated. | ||
* - PHYTEC_EEPROM_INVAL when the data is invalid. | ||
*/ | ||
u8 __maybe_unused phytec_get_am62_eth(struct phytec_eeprom_data *data) | ||
{ | ||
u8 eth = phytec_check_opt(data, 6); | ||
|
||
pr_debug("%s: eth: %u\n", __func__, eth); | ||
return eth; | ||
} | ||
|
||
/* | ||
* Reads RTC information from EEPROM. | ||
* | ||
* returns: | ||
* - 0 if no RTC is poulated. | ||
* - 1 if it is populated. | ||
* - PHYTEC_EEPROM_INVAL when the data is invalid. | ||
*/ | ||
u8 __maybe_unused phytec_get_am62_rtc(struct phytec_eeprom_data *data) | ||
{ | ||
u8 rtc = phytec_check_opt(data, 7); | ||
|
||
pr_debug("%s: rtc: %u\n", __func__, rtc); | ||
return rtc; | ||
} | ||
|
||
#else | ||
|
||
inline int __maybe_unused phytec_am62_detect(struct phytec_eeprom_data *data) | ||
{ | ||
return -1; | ||
} | ||
|
||
inline u8 __maybe_unused | ||
phytec_get_am62_ddr_size(struct phytec_eeprom_data *data) | ||
{ | ||
return PHYTEC_EEPROM_INVAL; | ||
} | ||
|
||
inline u8 __maybe_unused phytec_get_am62_spi(struct phytec_eeprom_data *data) | ||
{ | ||
return PHYTEC_EEPROM_INVAL; | ||
} | ||
|
||
inline u8 __maybe_unused phytec_get_am62_eth(struct phytec_eeprom_data *data) | ||
{ | ||
return PHYTEC_EEPROM_INVAL; | ||
} | ||
|
||
inline u8 __maybe_unused phytec_get_am62_rtc(struct phytec_eeprom_data *data) | ||
{ | ||
return PHYTEC_EEPROM_INVAL; | ||
} | ||
#endif |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,36 @@ | ||
/* SPDX-License-Identifier: GPL-2.0-or-later */ | ||
/* | ||
* Copyright (C) 2024 PHYTEC Messtechnik GmbH | ||
* Author: Daniel Schultz <d.schultz@phytec.de> | ||
*/ | ||
|
||
#ifndef _PHYTEC_AM6_SOM_DETECTION_H | ||
#define _PHYTEC_AM6_SOM_DETECTION_H | ||
|
||
#include "phytec_som_detection.h" | ||
|
||
#define PHYTEC_AM62X_SOM 71 | ||
#define PHYTEC_AM64X_SOM 72 | ||
#define PHYTEC_EEPROM_VALUE_X 0x21 | ||
#define PHYTEC_EEPROM_NOR_FLASH_64MB_QSPI 0xC | ||
|
||
int __maybe_unused phytec_am6_detect(struct phytec_eeprom_data *data); | ||
u8 __maybe_unused phytec_get_am6_ddr_size(struct phytec_eeprom_data *data); | ||
u8 __maybe_unused phytec_get_am6_spi(struct phytec_eeprom_data *data); | ||
u8 __maybe_unused phytec_get_am6_eth(struct phytec_eeprom_data *data); | ||
u8 __maybe_unused phytec_get_am6_rtc(struct phytec_eeprom_data *data); | ||
|
||
static inline int phytec_am6_is_qspi(struct phytec_eeprom_data *data) | ||
{ | ||
u8 spi = phytec_get_am6_spi(data); | ||
|
||
if (spi == PHYTEC_EEPROM_VALUE_X) | ||
return 0; | ||
return spi <= PHYTEC_EEPROM_NOR_FLASH_64MB_QSPI; | ||
} | ||
|
||
static inline int phytec_am6_is_ospi(struct phytec_eeprom_data *data) | ||
{ | ||
return phytec_get_am6_spi(data) > PHYTEC_EEPROM_NOR_FLASH_64MB_QSPI; | ||
} | ||
#endif /* _PHYTEC_AM6_SOM_DETECTION_H */ |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.