Merge branch 'master' of https://source.denx.de/u-boot/custodians/u-boot-sunxi

This is mostly about support for the Allwinner R528/T113s SoC, which is
reportedly the same die as the Allwinner D1, but with the two
Arm Cortex-A7 cores activated instead of the RISC-V one.
Using sunxi code outside of arch/arm proved to be difficult, so apart
from enabling this Arm SoC, the patches also prepare for more refactoring
to get the D1 nicely supported some day:
- We get rid of some Kconfig (hard-)coded GPIO pins, responsible for
  enabling regulators.
- The GPIO code is moved out of arch/arm, into drivers/gpio.
- Some definitions are moved out of header files under asm/arch.
- Some T113s/D1 specific definitions are guarded by a generic Kconfig
  symbol (CONFIG_SUNXI_GEN_NCAT2).
- The DRAM controller initialisation code is located under drivers/ram.
- The base SoC .dtsi files are shared (under arch/riscv, as in Linux).

Of course there are also the usual new SoC specific patches, like clock
and pinmux descriptions, alongside a rework of the pinctrl code, since
Allwinner changed the GPIO register layout, for the first time since
sunxi's inception.
On top of this the PSCI code sees some update, to provide SMP services
for R528/T113s boards. Many thanks to Sam for providing this code and
staying strong through the review cycles.
The final patch enables support for one popular board, I hope to see
more DTs and defconfigs contributed in the future!

Many thanks to all the various contributors, testers and reviewers,
that series was a real team effort!

1 files changed, 38 insertions, 0 deletions

diff --git a/drivers/net/sunxi_emac.c b/drivers/net/sunxi_emac.c
index 4c90d4b4981..f546ad1fe8d 100644
--- a/drivers/net/sunxi_emac.c
+++ b/drivers/net/sunxi_emac.c
@@ -17,6 +17,7 @@
 #include <net.h>
 #include <asm/io.h>
 #include <asm/arch/clock.h>
+#include <power/regulator.h>
 
 /* EMAC register  */
 struct emac_regs {
@@ -165,6 +166,7 @@ struct emac_eth_dev {
 	struct phy_device *phydev;
 	int link_printed;
 	uchar rx_buf[EMAC_RX_BUFSIZE];
+	struct udevice *phy_reg;
 };
 
 struct emac_rxhdr {
@@ -572,6 +574,9 @@ static int sunxi_emac_eth_probe(struct udevice *dev)
 	if (ret)
 		return ret;
 
+	if (priv->phy_reg)
+		regulator_set_enable(priv->phy_reg, true);
+
 	return sunxi_emac_init_phy(priv, dev);
 }
 
@@ -585,9 +590,42 @@ static const struct eth_ops sunxi_emac_eth_ops = {
 static int sunxi_emac_eth_of_to_plat(struct udevice *dev)
 {
 	struct eth_pdata *pdata = dev_get_plat(dev);
+	struct emac_eth_dev *priv = dev_get_priv(dev);
+	struct ofnode_phandle_args args;
+	ofnode phy_node, mdio_node;
+	int ret;
 
 	pdata->iobase = dev_read_addr(dev);
 
+	phy_node = dev_get_phy_node(dev);
+	if (!ofnode_valid(phy_node)) {
+		dev_err(dev, "failed to get PHY node\n");
+		return -ENOENT;
+	}
+	/*
+	 * The PHY regulator is in the MDIO node, not the EMAC or PHY node.
+	 * U-Boot does not have (and does not need) a device driver for the
+	 * MDIO device, so just "pass through" that DT node to get to the
+	 * regulator phandle.
+	 * The PHY regulator is optional, though: ignore if we cannot find
+	 * a phy-supply property.
+	 */
+	mdio_node = ofnode_get_parent(phy_node);
+	ret= ofnode_parse_phandle_with_args(mdio_node, "phy-supply", NULL, 0, 0,
+					    &args);
+	if (ret && ret != -ENOENT) {
+		dev_err(dev, "failed to get PHY supply node\n");
+		return ret;
+	}
+	if (!ret) {
+		ret = uclass_get_device_by_ofnode(UCLASS_REGULATOR, args.node,
+						  &priv->phy_reg);
+		if (ret) {
+			dev_err(dev, "failed to get PHY regulator node\n");
+			return ret;
+		}
+	}
+
 	return 0;
 }