[PATCH V3 3/4] ARM64 LPC: support serial based on low-pin-count

On 2016/9/14 20:25, Arnd Bergmann wrote:

On Wednesday, September 14, 2016 8:15:53 PM CEST Zhichang Yuan wrote:

quoted

From: "zhichang.yuan" <redacted>

On Hip06 platform, a 16550 compatible UART is connected to low-pin-count and
controlled through the LPC I/O cycles. After registering the LPC uart specific
serial_in/serial_out to 8250 core driver, serial data can be read/written
through the LPC.

Signed-off-by: zhichang.yuan <redacted>

I still think this should be handled by 8250_of.c after the addition of
support for IORESOURCE_IO.

The 8250_hisi_lpc.c support both ACPI and dts similar to 8250_dw :

+static struct platform_driver hs_lpc8250_driver = {
+	.driver = {
+		.name		= "hisi-lpc-uart",
+		.of_match_table	= hs8250_of_match,
+		.acpi_match_table = ACPI_PTR(hs8250_acpi_match),

So, I am a little confused why we need to support dts in 8250_of.c and support ACPI in another
driver file.

best,
Zhichang

	Arnd


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