From 020ed9c666748b103e0740622ca4128a2bd40f29 Mon Sep 17 00:00:00 2001 From: Ioana Ciornei Date: Mon, 18 May 2020 14:48:36 +0300 Subject: arm: dts: ls2080aqds: add CONFIG_MULTI_DTB_FIT support Add support for selecting the appropriate DTS file depending on the SERDES protocol used. The fsl-ls2080a-qds DTS will be used by default if there isn't a DTS file specifically made for the current SERDES protocol. This patch adds the necessary DPMAC nodes (DPMAC 1-8) for protocol 42 (0x2A) on SD#1. Also, in case CONFIG_DM_ETH and CONFIG_MULTI_DTB_FIT are enabled implement the board_fit_config_name_match() function in order to choose the appropriate DTS. Signed-off-by: Ioana Ciornei Reviewed-by: Priyanka Jain --- board/freescale/ls2080aqds/eth.c | 97 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 97 insertions(+) (limited to 'board') diff --git a/board/freescale/ls2080aqds/eth.c b/board/freescale/ls2080aqds/eth.c index 2b1b106b07..0d6eec377f 100644 --- a/board/freescale/ls2080aqds/eth.c +++ b/board/freescale/ls2080aqds/eth.c @@ -989,3 +989,100 @@ void reset_phy(void) mc_env_boot(); } #endif /* CONFIG_RESET_PHY_R */ + +#if defined(CONFIG_DM_ETH) && defined(CONFIG_MULTI_DTB_FIT) + +/* Structure to hold SERDES protocols supported in case of + * CONFIG_DM_ETH enabled (network interfaces are described in the DTS). + * + * @serdes_block: the index of the SERDES block + * @serdes_protocol: the decimal value of the protocol supported + * @dts_needed: DTS notes describing the current configuration are needed + * + * When dts_needed is true, the board_fit_config_name_match() function + * will try to exactly match the current configuration of the block with a DTS + * name provided. + */ +static struct serdes_configuration { + u8 serdes_block; + u32 serdes_protocol; + bool dts_needed; +} supported_protocols[] = { + /* Serdes block #1 */ + {1, 42, true}, + + /* Serdes block #2 */ + {2, 65, false}, +}; + +#define SUPPORTED_SERDES_PROTOCOLS ARRAY_SIZE(supported_protocols) + +static bool protocol_supported(u8 serdes_block, u32 protocol) +{ + struct serdes_configuration serdes_conf; + int i; + + for (i = 0; i < SUPPORTED_SERDES_PROTOCOLS; i++) { + serdes_conf = supported_protocols[i]; + if (serdes_conf.serdes_block == serdes_block && + serdes_conf.serdes_protocol == protocol) + return true; + } + + return false; +} + +static void get_str_protocol(u8 serdes_block, u32 protocol, char *str) +{ + struct serdes_configuration serdes_conf; + int i; + + for (i = 0; i < SUPPORTED_SERDES_PROTOCOLS; i++) { + serdes_conf = supported_protocols[i]; + if (serdes_conf.serdes_block == serdes_block && + serdes_conf.serdes_protocol == protocol) { + if (serdes_conf.dts_needed == true) + sprintf(str, "%u", protocol); + else + sprintf(str, "x"); + return; + } + } +} + +int board_fit_config_name_match(const char *name) +{ + struct ccsr_gur *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR); + u32 rcw_status = in_le32(&gur->rcwsr[28]); + char srds_s1_str[2], srds_s2_str[2]; + u32 srds_s1, srds_s2; + char expected_dts[100]; + + srds_s1 = rcw_status & FSL_CHASSIS3_RCWSR28_SRDS1_PRTCL_MASK; + srds_s1 >>= FSL_CHASSIS3_RCWSR28_SRDS1_PRTCL_SHIFT; + + srds_s2 = rcw_status & FSL_CHASSIS3_RCWSR28_SRDS2_PRTCL_MASK; + srds_s2 >>= FSL_CHASSIS3_RCWSR28_SRDS2_PRTCL_SHIFT; + + /* Check for supported protocols. The default DTS will be used + * in this case + */ + if (!protocol_supported(1, srds_s1) || + !protocol_supported(2, srds_s2)) + return -1; + + get_str_protocol(1, srds_s1, srds_s1_str); + get_str_protocol(2, srds_s2, srds_s2_str); + + printf("expected_dts %s\n", expected_dts); + sprintf(expected_dts, "fsl-ls2080a-qds-%s-%s", + srds_s1_str, srds_s2_str); + + if (!strcmp(name, expected_dts)) + return 0; + + printf("this is not!\n"); + return -1; +} + +#endif -- cgit v1.2.3