ARM: 6204/1: Fixups for the RealView PB1176

This is a number of basic fixes to the PB1176 that makes it tick
properly:

- Detect MMC insertion/removal even when PL061 GPIO is not compiled
  in. The register to read this status directly is removed on the
  PB1176.
- Define the UART3 on the DevChip (where is actually is) and define
  the new UART4 serial port on the FPGA.
- Also define the clocks for these two UARTs apropriately.
- Remove the false notion that the PB1176 should have its CLCD
  on the ISSP, this is not the case, it is in the DevChip.
- Remove the defintions and the previously commented-out PL081
  DMAC. As confirmed by mail this was found to be broken on the
  PB1176 board and removed from the subsequent FPGA images.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 22 insertions, 1 deletions

diff --git a/arch/arm/mach-realview/core.c b/arch/arm/mach-realview/core.c
index 595be19f8ad5..9e17b4afc47e 100644
--- a/arch/arm/mach-realview/core.c
+++ b/arch/arm/mach-realview/core.c
@@ -232,6 +232,21 @@ static unsigned int realview_mmc_status(struct device *dev)
 	struct amba_device *adev = container_of(dev, struct amba_device, dev);
 	u32 mask;
 
+	if (machine_is_realview_pb1176()) {
+		static bool inserted = false;
+
+		/*
+		 * The PB1176 does not have the status register,
+		 * assume it is inserted at startup, then invert
+		 * for each call so card insertion/removal will
+		 * be detected anyway. This will not be called if
+		 * GPIO on PL061 is active, which is the proper
+		 * way to do this on the PB1176.
+		 */
+		inserted = !inserted;
+		return inserted ? 0 : 1;
+	}
+
 	if (adev->res.start == REALVIEW_MMCI0_BASE)
 		mask = 1;
 	else
@@ -313,6 +328,12 @@ static struct clk_lookup lookups[] = {
 	}, {	/* UART3 */
 		.dev_id		= "fpga:uart3",
 		.clk		= &ref24_clk,
+	}, {	/* UART3 is on the dev chip in PB1176 */
+		.dev_id		= "dev:uart3",
+		.clk		= &ref24_clk,
+	}, {	/* UART4 only exists in PB1176 */
+		.dev_id		= "fpga:uart4",
+		.clk		= &ref24_clk,
 	}, {	/* KMI0 */
 		.dev_id		= "fpga:kmi0",
 		.clk		= &ref24_clk,
@@ -322,7 +343,7 @@ static struct clk_lookup lookups[] = {
 	}, {	/* MMC0 */
 		.dev_id		= "fpga:mmc0",
 		.clk		= &ref24_clk,
-	}, {	/* EB:CLCD */
+	}, {	/* CLCD is in the PB1176 and EB DevChip */
 		.dev_id		= "dev:clcd",
 		.clk		= &oscvco_clk,
 	}, {	/* PB:CLCD */