lantiq: add Linux 5.4 support as testing kernel version

Switch to the mainline Lantiq PCIe PHY driver and update the vr9.dtsi
accordingly.

The Lantiq IRQ SMP support added upstream required changes to the SoC
dtsi as well.

Following changes are made to the Lantiq kernel patches:

  0005-lantiq_etop-pass-struct-device-to-DMA-API-functions.patch
  0006-MIPS-lantiq-pass-struct-device-to-DMA-API-functions.patch
    applied upstream

  0008-MIPS-lantiq-backport-old-timer-code.patch
    access_ok API update because it lost it's type (which was the first)
    parameter in upstream commit 96d4f267e40f95 ("Remove 'type' argument
    from access_ok() function")

  0024-MIPS-lantiq-autoselect-soc-rev-matching-fw.patch
    merged into 0026-MIPS-lantiq-Add-GPHY-Firmware-loader.patch

  0024-MIPS-lantiq-revert-DSA-switch-driver-PMU-clock-chang.patch
    revert upstream changes required for upstream xrx200 ethernet and
    xrx200 (DSA) switch driver but breaking our driver

  0026-MIPS-lantiq-Add-GPHY-Firmware-loader.patch
    required for our driver but dropped upstream, add former upstream
    version

  0028-NET-lantiq-various-etop-fixes.patch
    now has to use the phy_set_max_speed API instead of modifying
    phydev->supported. Also call ltq_dma_enable_irq() in
    ltq_etop_open() based on upstream commit cc973aecf0b054 ("MIPS:
    lantiq: Do not enable IRQs in dma open")

Signed-off-by: Mathias Kresin <dev@kresin.me>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>

1 files changed, 0 insertions, 45 deletions

diff --git a/target/linux/lantiq/patches-5.4/0024-MIPS-lantiq-autoselect-soc-rev-matching-fw.patch b/target/linux/lantiq/patches-5.4/0024-MIPS-lantiq-autoselect-soc-rev-matching-fw.patch
deleted file mode 100644
index 7fbd97feca..0000000000
--- a/target/linux/lantiq/patches-5.4/0024-MIPS-lantiq-autoselect-soc-rev-matching-fw.patch
+++ /dev/null
@@ -1,45 +0,0 @@
-From ae0c287060749dc72c866484d12bd3cade8c517d Mon Sep 17 00:00:00 2001
-From: Mathias Kresin <dev@kresin.me>
-Date: Fri, 19 Jan 2018 20:19:06 +0100
-Subject: [PATCH] MIPS: lantiq: autoselect matching vr9 rev gphy firmware
-
-Add a custom xrx200 ethernet phy compatible to load the firmware matching
-the vr9 revision without specifing an expected revision.
-
-We have quite a few boards in the tree were later produced ones are using
-a more recent vr9. It is impossible to distinguish which revision of the
-vr9 is used without opening the case and removing a heatsink for some of
-them.
-
-Signed-off-by: Mathias Kresin <dev@kresin.me>
----
- drivers/soc/lantiq/gphy.c | 11 +++++++++++
- 1 file changed, 11 insertions(+)
-
---- a/drivers/soc/lantiq/gphy.c
-+++ b/drivers/soc/lantiq/gphy.c
-@@ -55,6 +55,7 @@ static const struct xway_gphy_match_data
- };
- 
- static const struct of_device_id xway_gphy_match[] = {
-+	{ .compatible = "lantiq,xrx200-gphy", .data = NULL },
- 	{ .compatible = "lantiq,xrx200a1x-gphy", .data = &xrx200a1x_gphy_data },
- 	{ .compatible = "lantiq,xrx200a2x-gphy", .data = &xrx200a2x_gphy_data },
- 	{ .compatible = "lantiq,xrx300-gphy", .data = &xrx300_gphy_data },
-@@ -111,6 +112,16 @@ static int xway_gphy_of_probe(struct pla
- 
- 	gphy_fw_name_cfg = of_device_get_match_data(dev);
- 
-+	if (of_device_is_compatible(pdev->dev.of_node, "lantiq,xrx200-gphy"))
-+		switch (ltq_soc_type()) {
-+		case SOC_TYPE_VR9:
-+			gphy_fw_name_cfg = &xrx200a1x_gphy_data;
-+			break;
-+		case SOC_TYPE_VR9_2:
-+			gphy_fw_name_cfg = &xrx200a2x_gphy_data;
-+			break;
-+		}
-+
- 	priv->gphy_clk_gate = devm_clk_get(dev, NULL);
- 	if (IS_ERR(priv->gphy_clk_gate)) {
- 		dev_err(dev, "Failed to lookup gate clock\n");