kernel: delete Linux 5.4 config and patches

As the upcoming release will be based on Linux 5.10 only, remove all
kernel configuration as well as patches for Linux 5.4.
There were no targets still actively using Linux 5.4.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 3a14580411adfb75f9a44eded9f41245b9e44606)

1 files changed, 0 insertions, 193 deletions

diff --git a/target/linux/layerscape/patches-5.4/802-can-0027-can-flexcan-add-CAN-wakeup-function-for-i.MX8.patch b/target/linux/layerscape/patches-5.4/802-can-0027-can-flexcan-add-CAN-wakeup-function-for-i.MX8.patch
deleted file mode 100644
index 29104bd14e..0000000000
--- a/target/linux/layerscape/patches-5.4/802-can-0027-can-flexcan-add-CAN-wakeup-function-for-i.MX8.patch
+++ /dev/null
@@ -1,193 +0,0 @@
-From 140de383d9d26e8be300b7ba86d56b47898cd8c9 Mon Sep 17 00:00:00 2001
-From: Joakim Zhang <qiangqing.zhang@nxp.com>
-Date: Tue, 30 Jul 2019 18:01:11 +0800
-Subject: [PATCH] can: flexcan: add CAN wakeup function for i.MX8
-
-The System Controller Firmware (SCFW) is a low-level system function
-which runs on a dedicated Cortex-M core to provide power, clock, and
-resource management. It exists on some i.MX8 processors. e.g. i.MX8QM
-(QM, QP), and i.MX8QX (QXP, DX).
-
-SCU driver manages the IPC interface between host CPU and the
-SCU firmware running on M4.
-
-For i.MX8, stop mode request is controlled by System Controller Unit(SCU)
-firmware.
-
-Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
----
- drivers/net/can/flexcan.c | 99 ++++++++++++++++++++++++++++++++++++++++-------
- 1 file changed, 86 insertions(+), 13 deletions(-)
-
---- a/drivers/net/can/flexcan.c
-+++ b/drivers/net/can/flexcan.c
-@@ -29,6 +29,11 @@
- #include <linux/pinctrl/consumer.h>
- #include <linux/regmap.h>
- 
-+#ifdef CONFIG_IMX_SCU_SOC
-+#include <linux/firmware/imx/sci.h>
-+#include <dt-bindings/firmware/imx/rsrc.h>
-+#endif
-+
- #define DRV_NAME			"flexcan"
- 
- /* 8 for RX fifo and 2 error handling */
-@@ -223,6 +228,7 @@
- #define FLEXCAN_QUIRK_DEFAULT_BIG_ENDIAN	BIT(7) /* default to BE register access */
- #define FLEXCAN_QUIRK_SETUP_STOP_MODE		BIT(8) /* Setup stop mode to support wakeup */
- #define FLEXCAN_QUIRK_TIMESTAMP_SUPPORT_FD	BIT(9) /* Use timestamp then support can fd mode */
-+#define FLEXCAN_QUIRK_USE_SCFW			BIT(10) /* Use System Controller Firmware */
- 
- /* Structure of the message buffer */
- struct flexcan_mb {
-@@ -323,6 +329,11 @@ struct flexcan_priv {
- 	struct regulator *reg_xceiver;
- 	struct flexcan_stop_mode stm;
- 
-+#ifdef CONFIG_IMX_SCU_SOC
-+	/* IPC handle when enable stop mode by System Controller firmware(scfw) */
-+	struct imx_sc_ipc *sc_ipc_handle;
-+#endif
-+
- 	/* Read and Write APIs */
- 	u32 (*read)(void __iomem *addr);
- 	void (*write)(u32 val, void __iomem *addr);
-@@ -352,7 +363,8 @@ static const struct flexcan_devtype_data
- static struct flexcan_devtype_data fsl_imx8qm_devtype_data = {
- 	.quirks = FLEXCAN_QUIRK_DISABLE_RXFG | FLEXCAN_QUIRK_ENABLE_EACEN_RRS |
- 		FLEXCAN_QUIRK_USE_OFF_TIMESTAMP | FLEXCAN_QUIRK_BROKEN_PERR_STATE |
--		FLEXCAN_QUIRK_TIMESTAMP_SUPPORT_FD,
-+		FLEXCAN_QUIRK_TIMESTAMP_SUPPORT_FD | FLEXCAN_QUIRK_SETUP_STOP_MODE |
-+		FLEXCAN_QUIRK_USE_SCFW,
- };
- 
- static const struct flexcan_devtype_data fsl_vf610_devtype_data = {
-@@ -503,6 +515,32 @@ static void flexcan_enable_wakeup_irq(st
- 	priv->write(reg_mcr, &regs->mcr);
- }
- 
-+#ifdef CONFIG_IMX_SCU_SOC
-+static void flexcan_stop_mode_enable_scfw(struct flexcan_priv *priv, bool enabled)
-+{
-+	struct device_node *np = priv->dev->of_node;
-+	u32 rsrc_id, val;
-+	int idx;
-+
-+	idx = of_alias_get_id(np, "can");
-+	if (idx == 0)
-+		rsrc_id = IMX_SC_R_CAN_0;
-+	else if (idx == 1)
-+		rsrc_id = IMX_SC_R_CAN_1;
-+	else
-+		rsrc_id = IMX_SC_R_CAN_2;
-+
-+	val = enabled ? 1 : 0;
-+	/* stop mode request */
-+	imx_sc_misc_set_control(priv->sc_ipc_handle, rsrc_id, IMX_SC_C_IPG_STOP, val);
-+}
-+#else
-+static int flexcan_stop_mode_enable_scfw(struct flexcan_priv *priv, bool enabled)
-+{
-+	return 0;
-+}
-+#endif
-+
- static inline int flexcan_enter_stop_mode(struct flexcan_priv *priv)
- {
- 	struct flexcan_regs __iomem *regs = priv->regs;
-@@ -512,9 +550,12 @@ static inline int flexcan_enter_stop_mod
- 	reg_mcr |= FLEXCAN_MCR_SLF_WAK;
- 	priv->write(reg_mcr, &regs->mcr);
- 
--	/* enable stop request */
--	regmap_update_bits(priv->stm.gpr, priv->stm.req_gpr,
--			   1 << priv->stm.req_bit, 1 << priv->stm.req_bit);
-+	 /* enable stop request */
-+	if (priv->devtype_data->quirks & FLEXCAN_QUIRK_USE_SCFW)
-+		flexcan_stop_mode_enable_scfw(priv, true);
-+	else
-+		regmap_update_bits(priv->stm.gpr, priv->stm.req_gpr,
-+				   1 << priv->stm.req_bit, 1 << priv->stm.req_bit);
- 
- 	return flexcan_low_power_enter_ack(priv);
- }
-@@ -525,8 +566,11 @@ static inline int flexcan_exit_stop_mode
- 	u32 reg_mcr;
- 
- 	/* remove stop request */
--	regmap_update_bits(priv->stm.gpr, priv->stm.req_gpr,
--			   1 << priv->stm.req_bit, 0);
-+	if (priv->devtype_data->quirks & FLEXCAN_QUIRK_USE_SCFW)
-+		flexcan_stop_mode_enable_scfw(priv, false);
-+	else
-+		regmap_update_bits(priv->stm.gpr, priv->stm.req_gpr,
-+				   1 << priv->stm.req_bit, 0);
- 
- 
- 	reg_mcr = priv->read(&regs->mcr);
-@@ -1782,11 +1826,6 @@ static int flexcan_setup_stop_mode(struc
- 		gpr_np->full_name, priv->stm.req_gpr, priv->stm.req_bit,
- 		priv->stm.ack_gpr, priv->stm.ack_bit);
- 
--	device_set_wakeup_capable(&pdev->dev, true);
--
--	if (of_property_read_bool(np, "wakeup-source"))
--		device_set_wakeup_enable(&pdev->dev, true);
--
- 	return 0;
- 
- out_put_node:
-@@ -1794,6 +1833,30 @@ out_put_node:
- 	return ret;
- }
- 
-+#ifdef CONFIG_IMX_SCU_SOC
-+static int flexcan_setup_stop_mode_scfw(struct platform_device *pdev)
-+{
-+	struct net_device *dev = platform_get_drvdata(pdev);
-+	struct flexcan_priv *priv;
-+	int ret;
-+
-+	priv = netdev_priv(dev);
-+
-+	ret = imx_scu_get_handle(&(priv->sc_ipc_handle));
-+	if (ret < 0) {
-+		dev_err(&pdev->dev, "get ipc handle used by SCU failed\n");
-+		return ret;
-+	}
-+
-+	return 0;
-+}
-+#else
-+static int flexcan_setup_stop_mode_scfw(struct platform_device *pdev)
-+{
-+	return 0;
-+}
-+#endif
-+
- static const struct of_device_id flexcan_of_match[] = {
- 	{ .compatible = "fsl,imx8qm-flexcan", .data = &fsl_imx8qm_devtype_data, },
- 	{ .compatible = "fsl,imx6q-flexcan", .data = &fsl_imx6q_devtype_data, },
-@@ -1936,9 +1999,19 @@ static int flexcan_probe(struct platform
- 	devm_can_led_init(dev);
- 
- 	if (priv->devtype_data->quirks & FLEXCAN_QUIRK_SETUP_STOP_MODE) {
--		err = flexcan_setup_stop_mode(pdev);
--		if (err)
-+		if (priv->devtype_data->quirks & FLEXCAN_QUIRK_USE_SCFW)
-+			err = flexcan_setup_stop_mode_scfw(pdev);
-+		else
-+			err = flexcan_setup_stop_mode(pdev);
-+
-+		if (err) {
- 			dev_dbg(&pdev->dev, "failed to setup stop-mode\n");
-+		} else {
-+			device_set_wakeup_capable(&pdev->dev, true);
-+
-+			if (of_property_read_bool(pdev->dev.of_node, "wakeup-source"))
-+				device_set_wakeup_enable(&pdev->dev, true);
-+		}
- 	}
- 
- 	return 0;