drm: rcar-du: Fix DIDSR field name

The DIDSR fields named LDCS were incorrectly defined as LCDS.
Both the Gen2 and Gen3 documentation refer to the fields as the "LVDS
Dot Clock Select".

Correct the definitions.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

drivers/gpu/drm/rcar-du/rcar_du_group.c

@@ -122,10 +122,10 @@ static void rcar_du_group_setup_didsr(struct rcar_du_group *rgrp)
 	didsr = DIDSR_CODE;
 	for (i = 0; i < num_crtcs; ++i, ++rcrtc) {
 		if (rcdu->info->lvds_clk_mask & BIT(rcrtc->index))
-			didsr |= DIDSR_LCDS_LVDS0(i)
+			didsr |= DIDSR_LDCS_LVDS0(i)
 			      |  DIDSR_PDCS_CLK(i, 0);
 		else
-			didsr |= DIDSR_LCDS_DCLKIN(i)
+			didsr |= DIDSR_LDCS_DCLKIN(i)
 			      |  DIDSR_PDCS_CLK(i, 0);
 	}
 

drivers/gpu/drm/rcar-du/rcar_du_regs.h

@@ -257,10 +257,10 @@
 
 #define DIDSR			0x20028
 #define DIDSR_CODE		(0x7790 << 16)
-#define DIDSR_LCDS_DCLKIN(n)	(0 << (8 + (n) * 2))
-#define DIDSR_LCDS_LVDS0(n)	(2 << (8 + (n) * 2))
-#define DIDSR_LCDS_LVDS1(n)	(3 << (8 + (n) * 2))
-#define DIDSR_LCDS_MASK(n)	(3 << (8 + (n) * 2))
+#define DIDSR_LDCS_DCLKIN(n)	(0 << (8 + (n) * 2))
+#define DIDSR_LDCS_LVDS0(n)	(2 << (8 + (n) * 2))
+#define DIDSR_LDCS_LVDS1(n)	(3 << (8 + (n) * 2))
+#define DIDSR_LDCS_MASK(n)	(3 << (8 + (n) * 2))
 #define DIDSR_PDCS_CLK(n, clk)	(clk << ((n) * 2))
 #define DIDSR_PDCS_MASK(n)	(3 << ((n) * 2))