diff options
| author | Christophe Roullier <christophe.roullier@st.com> | 2019-05-17 15:08:43 +0200 |
|---|---|---|
| committer | Patrice Chotard <patrice.chotard@st.com> | 2019-06-06 17:40:18 +0200 |
| commit | edacf2682146859b53f2289e528c423d59ba884a (patch) | |
| tree | dccc31aa2e0e82ddf76644f0bf57c9a941095239 /board/st | |
| parent | f6ccdda126cdbd70da5be5b54e7fbb99e780de2a (diff) | |
board: stm32mp1: Add board_interface_eth_init
Called to configure Ethernet PHY interface selection and
configure clock selection in RCC Ethernet clock tree.
Signed-off-by: Christophe Roullier <christophe.roullier@st.com>
Diffstat (limited to 'board/st')
| -rw-r--r-- | board/st/stm32mp1/stm32mp1.c | 68 |
1 files changed, 65 insertions, 3 deletions
diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c index 88bc8814c4..776929350f 100644 --- a/board/st/stm32mp1/stm32mp1.c +++ b/board/st/stm32mp1/stm32mp1.c @@ -53,9 +53,9 @@ #define SYSCFG_PMCSETR_ETH_SELMII BIT(20) #define SYSCFG_PMCSETR_ETH_SEL_MASK GENMASK(23, 21) -#define SYSCFG_PMCSETR_ETH_SEL_GMII_MII (0 << 21) -#define SYSCFG_PMCSETR_ETH_SEL_RGMII (1 << 21) -#define SYSCFG_PMCSETR_ETH_SEL_RMII (4 << 21) +#define SYSCFG_PMCSETR_ETH_SEL_GMII_MII 0 +#define SYSCFG_PMCSETR_ETH_SEL_RGMII BIT(21) +#define SYSCFG_PMCSETR_ETH_SEL_RMII BIT(23) /* * Get a global data pointer @@ -550,6 +550,68 @@ void board_quiesce_devices(void) setup_led(LEDST_OFF); } +/* board interface eth init */ +/* this is a weak define that we are overriding */ +int board_interface_eth_init(phy_interface_t interface_type, + bool eth_clk_sel_reg, bool eth_ref_clk_sel_reg) +{ + u8 *syscfg; + u32 value; + + syscfg = (u8 *)syscon_get_first_range(STM32MP_SYSCON_SYSCFG); + + if (!syscfg) + return -ENODEV; + + switch (interface_type) { + case PHY_INTERFACE_MODE_MII: + value = SYSCFG_PMCSETR_ETH_SEL_GMII_MII | + SYSCFG_PMCSETR_ETH_REF_CLK_SEL; + debug("%s: PHY_INTERFACE_MODE_MII\n", __func__); + break; + case PHY_INTERFACE_MODE_GMII: + if (eth_clk_sel_reg) + value = SYSCFG_PMCSETR_ETH_SEL_GMII_MII | + SYSCFG_PMCSETR_ETH_CLK_SEL; + else + value = SYSCFG_PMCSETR_ETH_SEL_GMII_MII; + debug("%s: PHY_INTERFACE_MODE_GMII\n", __func__); + break; + case PHY_INTERFACE_MODE_RMII: + if (eth_ref_clk_sel_reg) + value = SYSCFG_PMCSETR_ETH_SEL_RMII | + SYSCFG_PMCSETR_ETH_REF_CLK_SEL; + else + value = SYSCFG_PMCSETR_ETH_SEL_RMII; + debug("%s: PHY_INTERFACE_MODE_RMII\n", __func__); + break; + case PHY_INTERFACE_MODE_RGMII: + case PHY_INTERFACE_MODE_RGMII_ID: + case PHY_INTERFACE_MODE_RGMII_RXID: + case PHY_INTERFACE_MODE_RGMII_TXID: + if (eth_clk_sel_reg) + value = SYSCFG_PMCSETR_ETH_SEL_RGMII | + SYSCFG_PMCSETR_ETH_CLK_SEL; + else + value = SYSCFG_PMCSETR_ETH_SEL_RGMII; + debug("%s: PHY_INTERFACE_MODE_RGMII\n", __func__); + break; + default: + debug("%s: Do not manage %d interface\n", + __func__, interface_type); + /* Do not manage others interfaces */ + return -EINVAL; + } + + /* clear and set ETH configuration bits */ + writel(SYSCFG_PMCSETR_ETH_SEL_MASK | SYSCFG_PMCSETR_ETH_SELMII | + SYSCFG_PMCSETR_ETH_REF_CLK_SEL | SYSCFG_PMCSETR_ETH_CLK_SEL, + syscfg + SYSCFG_PMCCLRR); + writel(value, syscfg + SYSCFG_PMCSETR); + + return 0; +} + enum env_location env_get_location(enum env_operation op, int prio) { u32 bootmode = get_bootmode(); |