gnu: u-boot: Patch to fix boot regressions for some platforms.

The previous workaround stopped the preboot phase from loading USB
support, which makes it impossible to use a USB keyboard to select a
generation from the boot menu without using a serial console.

* gnu/packages/patches/u-boot-rockchip-inno-usb.patch: New File.
* gnu/local.mk (dist_patch_DATA): Add patch.
* gnu/packages/bootloaders.scm (%u-boot-rockchip-inno-usb-patch): New variable.
  (u-boot)[source]: Add patch.
  (u-boot-rockpro64-rk3399, u-boot-pinebook-pro-rk3399): Remove obsolete phase.

1 files changed, 238 insertions, 0 deletions

diff --git a/gnu/packages/patches/u-boot-rockchip-inno-usb.patch b/gnu/packages/patches/u-boot-rockchip-inno-usb.patch
new file mode 100644
index 0000000000..58f04b2c78
--- /dev/null
+++ b/gnu/packages/patches/u-boot-rockchip-inno-usb.patch
@@ -0,0 +1,238 @@
+Downloaded from:
+https://patchwork.ozlabs.org/project/uboot/patch/20210406151059.1187379-1-icenowy@aosc.io
+
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+From: Icenowy Zheng <icenowy@aosc.io>
+To: Simon Glass <sjg@chromium.org>, Kever Yang <kever.yang@rock-chips.com>,
+ Frank Wang <frank.wang@rock-chips.com>,
+ Jagan Teki <jagan@amarulasolutions.com>
+Cc: u-boot@lists.denx.de,
+	Icenowy Zheng <icenowy@aosc.io>
+Subject: [PATCH] phy: rockchip: inno-usb2: fix hang when multiple controllers
+ exit
+Date: Tue,  6 Apr 2021 23:10:59 +0800
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+
+The OHCI and EHCI controllers are both bound to the same PHY. They will
+both do init and power_on operations when the controller is brought up
+and both do power_off and exit when the controller is stopped. However,
+the PHY uclass of U-Boot is not as sane as we thought -- they won't
+maintain a status mark for PHYs, and thus the functions of the PHYs
+could be called for multiple times. Calling init/power_on for multiple
+times have no severe problems, however calling power_off/exit for
+multiple times have a problem -- the first exit call will stop the PHY
+clock, and power_off/exit calls after it still trying to write to PHY
+registers. The write operation to PHY registers will fail because clock
+is already stopped.
+
+Adapt the count mechanism from phy-sun4i-usb to both init/exit and
+power_on/power_off functions to phy-rockchip-inno-usb2 to fix this
+problem. With this stopping USB controllers (manually or before booting
+a kernel) will work.
+
+Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
+Fixes: ac97a9ece14e ("phy: rockchip: Add Rockchip USB2PHY driver")
+Tested-by: Peter Robinson <pbrobinson@gmail.com>
+---
+ drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 21 +++++++++++++++++++
+ 1 file changed, 21 insertions(+)
+
+diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
+index 62b8ba3a4a..be9cc99d90 100644
+--- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
++++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
+@@ -62,6 +62,8 @@ struct rockchip_usb2phy {
+ 	void *reg_base;
+ 	struct clk phyclk;
+ 	const struct rockchip_usb2phy_cfg *phy_cfg;
++	int init_count;
++	int power_on_count;
+ };
+ 
+ static inline int property_enable(void *reg_base,
+@@ -92,6 +94,10 @@ static int rockchip_usb2phy_power_on(struct phy *phy)
+ 	struct rockchip_usb2phy *priv = dev_get_priv(parent);
+ 	const struct rockchip_usb2phy_port_cfg *port_cfg = us2phy_get_port(phy);
+ 
++	priv->power_on_count++;
++	if (priv->power_on_count != 1)
++		return 0;
++
+ 	property_enable(priv->reg_base, &port_cfg->phy_sus, false);
+ 
+ 	/* waiting for the utmi_clk to become stable */
+@@ -106,6 +112,10 @@ static int rockchip_usb2phy_power_off(struct phy *phy)
+ 	struct rockchip_usb2phy *priv = dev_get_priv(parent);
+ 	const struct rockchip_usb2phy_port_cfg *port_cfg = us2phy_get_port(phy);
+ 
++	priv->power_on_count--;
++	if (priv->power_on_count != 0)
++		return 0;
++
+ 	property_enable(priv->reg_base, &port_cfg->phy_sus, true);
+ 
+ 	return 0;
+@@ -118,6 +128,10 @@ static int rockchip_usb2phy_init(struct phy *phy)
+ 	const struct rockchip_usb2phy_port_cfg *port_cfg = us2phy_get_port(phy);
+ 	int ret;
+ 
++	priv->init_count++;
++	if (priv->init_count != 1)
++		return 0;
++
+ 	ret = clk_enable(&priv->phyclk);
+ 	if (ret) {
+ 		dev_err(phy->dev, "failed to enable phyclk (ret=%d)\n", ret);
+@@ -140,6 +154,10 @@ static int rockchip_usb2phy_exit(struct phy *phy)
+ 	struct udevice *parent = dev_get_parent(phy->dev);
+ 	struct rockchip_usb2phy *priv = dev_get_priv(parent);
+ 
++	priv->init_count--;
++	if (priv->init_count != 0)
++		return 0;
++
+ 	clk_disable(&priv->phyclk);
+ 
+ 	return 0;
+@@ -212,6 +230,9 @@ static int rockchip_usb2phy_probe(struct udevice *dev)
+ 		return ret;
+ 	}
+ 
++	priv->power_on_count = 0;
++	priv->init_count = 0;
++
+ 	return 0;
+ }
+