diff options
| author | Andreas Dannenberg <dannenberg@ti.com> | 2019-06-04 18:08:26 -0500 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2019-07-17 11:13:18 -0400 |
| commit | 03facc727180ed84dcc61aedfcbb222dc201e0af (patch) | |
| tree | adb9f15c77b03ceaf2fb1af8038dcbb144fd6ea9 /arch | |
| parent | 183fa08ae529a3a228ed62fd099c7d1e9e76c8b0 (diff) | |
board: ti: am654: Use EEPROM-based board detection
The TI AM654x EVM base board and the associated daughtercards have on-
board I2C-based EEPROMs containing board configuration data. Use the
board detection infrastructure introduced earlier to do the following:
1) Parse the AM654x EVM base board EEPROM and populate items like board
name and MAC addresses into the TI common EEPROM data structure
residing in SRAM scratch space
2) Check for presence of daughter card(s) by probing the associated
presence signals via an I2C-based GPIO expander. Then, if such a
card is found, parse the data such as additional Ethernet MAC
addresses from its on-board EEPROM and populate into U-Boot
accordingly
3) Dynamically create an U-Boot ENV variable called overlay_files
containing a list of daugherboard-specific DTB overlays based on
daughercards found.
This patch adds support for the AM654x base board ("AM6-COMPROCEVM")
as well as for the IDK ("AM6-IDKAPPEVM"), OLDI LCD ("OLDI-LCD1EVM")
PCIe/USB3.0 ("SER-PCIEUSBEVM"), 2 Lane PCIe/USB2.0 ("SER-PCIE2LEVM"),
and general purpuse ("AM6-GPAPPEVM") daughtercards.
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-k3/am6_init.c | 4 | ||||
| -rw-r--r-- | arch/arm/mach-k3/include/mach/sys_proto.h | 2 |
2 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mach-k3/am6_init.c b/arch/arm/mach-k3/am6_init.c index e326f575e5f..cb96581bfbb 100644 --- a/arch/arm/mach-k3/am6_init.c +++ b/arch/arm/mach-k3/am6_init.c @@ -11,6 +11,7 @@ #include <spl.h> #include <asm/arch/hardware.h> #include <asm/arch/sysfw-loader.h> +#include <asm/arch/sys_proto.h> #include "common.h" #include <dm.h> #include <dm/uclass-internal.h> @@ -111,6 +112,9 @@ void board_init_f(ulong dummy) preloader_console_init(); #endif + /* Perform EEPROM-based board detection */ + do_board_detect(); + #ifdef CONFIG_K3_AM654_DDRSS ret = uclass_get_device(UCLASS_RAM, 0, &dev); if (ret) diff --git a/arch/arm/mach-k3/include/mach/sys_proto.h b/arch/arm/mach-k3/include/mach/sys_proto.h index 018725b4d12..787a2744925 100644 --- a/arch/arm/mach-k3/include/mach/sys_proto.h +++ b/arch/arm/mach-k3/include/mach/sys_proto.h @@ -12,4 +12,6 @@ u32 wait_on_value(u32 read_bit_mask, u32 match_value, void *read_addr, u32 bound); struct ti_sci_handle *get_ti_sci_handle(void); int fdt_fixup_msmc_ram(void *blob, char *parent_path, char *node_name); +int do_board_detect(void); + #endif |