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, 165 deletions

diff --git a/target/linux/layerscape/patches-5.4/808-i2c-0014-i2c-mux-pca954x-support-property-idle-state.patch b/target/linux/layerscape/patches-5.4/808-i2c-0014-i2c-mux-pca954x-support-property-idle-state.patch
deleted file mode 100644
index 4263717f43..0000000000
--- a/target/linux/layerscape/patches-5.4/808-i2c-0014-i2c-mux-pca954x-support-property-idle-state.patch
+++ /dev/null
@@ -1,165 +0,0 @@
-From 5b51284db77e6383ff438b1dd21ee83bb6eaa895 Mon Sep 17 00:00:00 2001
-From: Biwen Li <biwen.li@nxp.com>
-Date: Tue, 22 Oct 2019 12:11:51 +0800
-Subject: [PATCH] i2c: mux: pca954x: support property idle-state
-
-This supports property idle-state,if present,
-overrides i2c-mux-idle-disconnect.
-
-My use cases:
-	- Use the property idle-state to fix
-	  an errata on LS2085ARDB and LS2088ARDB.
-	- Errata id: E-00013(board LS2085ARDB and
-	  LS2088ARDB revision on Rev.B, Rev.C and Rev.D).
-	- About E-00013:
-	  - Description: I2C1 and I2C3 buses
-	    are missing pull-up.
-	  - Impact: When the PCA954x device is tri-stated, the I2C bus
-	    will float. This makes the I2C bus and its associated
-	    downstream devices inaccessible.
-	  - Hardware fix: Populate resistors R189 and R190 for I2C1
-	    and resistors R228 and R229 for I2C3.
-	  - Software fix: Remove the tri-state option from the PCA954x
-	    driver(PCA954x always on enable status, specify a
-	    channel zero in dts to fix the errata E-00013).
-
-Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
-Signed-off-by: Biwen Li <biwen.li@nxp.com>
----
- drivers/i2c/muxes/i2c-mux-pca954x.c | 69 ++++++++++++++++++++++++-------------
- 1 file changed, 46 insertions(+), 23 deletions(-)
-
---- a/drivers/i2c/muxes/i2c-mux-pca954x.c
-+++ b/drivers/i2c/muxes/i2c-mux-pca954x.c
-@@ -87,7 +87,7 @@ struct pca954x {
- 
- 	u8 last_chan;		/* last register value */
- 	/* MUX_IDLE_AS_IS, MUX_IDLE_DISCONNECT or >= 0 for channel */
--	s8 idle_state;
-+	s32 idle_state;
- 
- 	struct i2c_client *client;
- 
-@@ -237,20 +237,23 @@ static int pca954x_reg_write(struct i2c_
- 				I2C_SMBUS_BYTE, &dummy);
- }
- 
-+static u8 pca954x_regval(struct pca954x *data, u8 chan)
-+{
-+	/* We make switches look like muxes, not sure how to be smarter. */
-+	if (data->chip->muxtype == pca954x_ismux)
-+		return chan | data->chip->enable;
-+	else
-+		return 1 << chan;
-+}
-+
- static int pca954x_select_chan(struct i2c_mux_core *muxc, u32 chan)
- {
- 	struct pca954x *data = i2c_mux_priv(muxc);
- 	struct i2c_client *client = data->client;
--	const struct chip_desc *chip = data->chip;
- 	u8 regval;
- 	int ret = 0;
- 
--	/* we make switches look like muxes, not sure how to be smarter */
--	if (chip->muxtype == pca954x_ismux)
--		regval = chan | chip->enable;
--	else
--		regval = 1 << chan;
--
-+	regval = pca954x_regval(data, chan);
- 	/* Only select the channel if its different from the last channel */
- 	if (data->last_chan != regval) {
- 		ret = pca954x_reg_write(muxc->parent, client, regval);
-@@ -264,7 +267,7 @@ static int pca954x_deselect_mux(struct i
- {
- 	struct pca954x *data = i2c_mux_priv(muxc);
- 	struct i2c_client *client = data->client;
--	s8 idle_state;
-+	s32 idle_state;
- 
- 	idle_state = READ_ONCE(data->idle_state);
- 	if (idle_state >= 0)
-@@ -410,6 +413,22 @@ static void pca954x_cleanup(struct i2c_m
- 	i2c_mux_del_adapters(muxc);
- }
- 
-+static int pca954x_init(struct i2c_client *client, struct pca954x *data)
-+{
-+	int ret;
-+	if (data->idle_state >= 0) {
-+		data->last_chan = pca954x_regval(data, data->idle_state);
-+	} else {
-+		/* Disconnect multiplexer */
-+		data->last_chan = 0;
-+	}
-+	ret = i2c_smbus_write_byte(client, data->last_chan);
-+	if (ret < 0)
-+		data->last_chan = 0;
-+
-+	return ret;
-+}
-+
- /*
-  * I2C init/probing/exit functions
-  */
-@@ -419,7 +438,6 @@ static int pca954x_probe(struct i2c_clie
- 	struct i2c_adapter *adap = client->adapter;
- 	struct device *dev = &client->dev;
- 	struct device_node *np = dev->of_node;
--	bool idle_disconnect_dt;
- 	struct gpio_desc *gpio;
- 	struct i2c_mux_core *muxc;
- 	struct pca954x *data;
-@@ -470,23 +488,24 @@ static int pca954x_probe(struct i2c_clie
- 		}
- 	}
- 
--	/* Write the mux register at addr to verify
-+	data->idle_state = MUX_IDLE_AS_IS;
-+	if (of_property_read_u32(np, "idle-state", &data->idle_state)) {
-+		if (np && of_property_read_bool(np, "i2c-mux-idle-disconnect"))
-+			data->idle_state = MUX_IDLE_DISCONNECT;
-+	}
-+
-+	/*
-+	 * Write the mux register at addr to verify
- 	 * that the mux is in fact present. This also
--	 * initializes the mux to disconnected state.
-+	 * initializes the mux to a channel
-+	 * or disconnected state.
- 	 */
--	if (i2c_smbus_write_byte(client, 0) < 0) {
-+	ret = pca954x_init(client, data);
-+	if (ret < 0) {
- 		dev_warn(dev, "probe failed\n");
- 		return -ENODEV;
- 	}
- 
--	data->last_chan = 0;		   /* force the first selection */
--	data->idle_state = MUX_IDLE_AS_IS;
--
--	idle_disconnect_dt = np &&
--		of_property_read_bool(np, "i2c-mux-idle-disconnect");
--	if (idle_disconnect_dt)
--		data->idle_state = MUX_IDLE_DISCONNECT;
--
- 	ret = pca954x_irq_setup(muxc);
- 	if (ret)
- 		goto fail_cleanup;
-@@ -538,9 +557,13 @@ static int pca954x_resume(struct device
- 	struct i2c_client *client = to_i2c_client(dev);
- 	struct i2c_mux_core *muxc = i2c_get_clientdata(client);
- 	struct pca954x *data = i2c_mux_priv(muxc);
-+	int ret;
- 
--	data->last_chan = 0;
--	return i2c_smbus_write_byte(client, 0);
-+	ret = pca954x_init(client, data);
-+	if (ret < 0)
-+		dev_err(&client->dev, "failed to verify the mux, the mux maybe not present in fact\n");
-+
-+	return ret;
- }
- #endif
-