Revert "NVIDIA: SAUCE: serial: 8250_mtk: Add ACPI support"

This reverts commit 072848c.

Author: abhsahu

drivers/tty/serial/8250/8250_mtk.c

@@ -19,7 +19,6 @@
 #include <linux/dma-mapping.h>
 #include <linux/tty.h>
 #include <linux/tty_flip.h>
-#include <linux/units.h>
 
 #include "8250.h"
 
@@ -522,7 +521,6 @@ static int mtk8250_probe(struct platform_device *pdev)
 	struct mtk8250_data *data;
 	struct resource *regs;
 	int irq, err;
-	struct fwnode_handle *fwnode = dev_fwnode(&pdev->dev);
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0)
@@ -545,13 +543,12 @@ static int mtk8250_probe(struct platform_device *pdev)
 
 	data->clk_count = 0;
 
-	if (is_of_node(fwnode)) {
+	if (pdev->dev.of_node) {
 		err = mtk8250_probe_of(pdev, &uart.port, data);
 		if (err)
 			return err;
-	} else if (!fwnode) {
+	} else
 		return -ENODEV;
-	}
 
 	spin_lock_init(&uart.port.lock);
 	uart.port.mapbase = regs->start;
@@ -567,18 +564,14 @@ static int mtk8250_probe(struct platform_device *pdev)
 	uart.port.startup = mtk8250_startup;
 	uart.port.set_termios = mtk8250_set_termios;
 	uart.port.uartclk = clk_get_rate(data->uart_clk);
-	if (!uart.port.uartclk)
-		uart.port.uartclk = 26 * HZ_PER_MHZ;
 #ifdef CONFIG_SERIAL_8250_DMA
 	if (data->dma)
 		uart.dma = data->dma;
 #endif
 
-	if (is_of_node(fwnode)) {
-		/* Disable Rate Fix function */
-		writel(0x0, uart.port.membase +
+	/* Disable Rate Fix function */
+	writel(0x0, uart.port.membase +
 			(MTK_UART_RATE_FIX << uart.port.regshift));
-	}
 
 	platform_set_drvdata(pdev, data);
 
@@ -656,18 +649,11 @@ static const struct of_device_id mtk8250_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, mtk8250_of_match);
 
-static const struct acpi_device_id mtk8250_acpi_match[] = {
-	{ "MTKI0511" },
-	{}
-};
-MODULE_DEVICE_TABLE(acpi, mtk8250_acpi_match);
-
 static struct platform_driver mtk8250_platform_driver = {
 	.driver = {
 		.name		= "mt6577-uart",
 		.pm		= &mtk8250_pm_ops,
 		.of_match_table	= mtk8250_of_match,
-		.acpi_match_table = mtk8250_acpi_match,
 	},
 	.probe			= mtk8250_probe,
 	.remove			= mtk8250_remove,