net: dwc_eth_qos: Constify st, eth-* values parsed out of DT

Use const bool for the values parsed out of DT. Drop the duplicate
assignment of false into those bool variables, assign them directly
with the content parsed out of DT. Abbreviate the variable name too.

Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Signed-off-by: Marek Vasut <marex@denx.de>

diff --git a/drivers/net/dwc_eth_qos_stm32.c b/drivers/net/dwc_eth_qos_stm32.c
index 72f65f80540188d15245b7daa11e3095f592d527..0b13d01346b9c67647c6504a3cd1655f9532383d 100644 (file)
--- a/drivers/net/dwc_eth_qos_stm32.c
+++ b/drivers/net/dwc_eth_qos_stm32.c
@@ -128,17 +128,13 @@ static int eqos_stop_clks_stm32(struct udevice *dev)
 static int eqos_probe_syscfg_stm32(struct udevice *dev,
                                   phy_interface_t interface_type)
 {
-       bool eth_ref_clk_sel_reg = false;
-       bool eth_clk_sel_reg = false;
+       /* Ethernet 50MHz RMII clock selection. */
+       const bool eth_ref_clk_sel = dev_read_bool(dev, "st,eth-ref-clk-sel");
+       /* Gigabit Ethernet 125MHz clock selection. */
+       const bool eth_clk_sel = dev_read_bool(dev, "st,eth-clk-sel");
        u8 *syscfg;
        u32 value;
 
-       /* Gigabit Ethernet 125MHz clock selection. */
-       eth_clk_sel_reg = dev_read_bool(dev, "st,eth-clk-sel");
-
-       /* Ethernet 50Mhz RMII clock selection */
-       eth_ref_clk_sel_reg = dev_read_bool(dev, "st,eth-ref-clk-sel");
-
        syscfg = (u8 *)syscon_get_first_range(STM32MP_SYSCON_SYSCFG);
        if (!syscfg)
                return -ENODEV;
@@ -154,14 +150,14 @@ static int eqos_probe_syscfg_stm32(struct udevice *dev,
                dev_dbg(dev, "PHY_INTERFACE_MODE_GMII\n");
                value = FIELD_PREP(SYSCFG_PMCSETR_ETH_SEL_MASK,
                                   SYSCFG_PMCSETR_ETH_SEL_GMII_MII);
-               if (eth_clk_sel_reg)
+               if (eth_clk_sel)
                        value |= SYSCFG_PMCSETR_ETH_CLK_SEL;
                break;
        case PHY_INTERFACE_MODE_RMII:
                dev_dbg(dev, "PHY_INTERFACE_MODE_RMII\n");
                value = FIELD_PREP(SYSCFG_PMCSETR_ETH_SEL_MASK,
                                   SYSCFG_PMCSETR_ETH_SEL_RMII);
-               if (eth_ref_clk_sel_reg)
+               if (eth_ref_clk_sel)
                        value |= SYSCFG_PMCSETR_ETH_REF_CLK_SEL;
                break;
        case PHY_INTERFACE_MODE_RGMII:
@@ -171,7 +167,7 @@ static int eqos_probe_syscfg_stm32(struct udevice *dev,
                dev_dbg(dev, "PHY_INTERFACE_MODE_RGMII\n");
                value = FIELD_PREP(SYSCFG_PMCSETR_ETH_SEL_MASK,
                                   SYSCFG_PMCSETR_ETH_SEL_RGMII);
-               if (eth_clk_sel_reg)
+               if (eth_clk_sel)
                        value |= SYSCFG_PMCSETR_ETH_CLK_SEL;
                break;
        default: