From 80b9c3bb80bfcb3959b7042efea272b259e9a995 Mon Sep 17 00:00:00 2001
From: Stefan Agner <stefan.agner@toradex.com>
Date: Tue, 11 Apr 2017 11:12:14 +0530
Subject: board: toradex: colibri_vf: Add DCU support for Colibri Vybrid

The Vybrid SoC family has the same display controller unit (DCU)
like the LS1021A SoC. This patch adds platform data, pinmux defines
and clock control to enable the driver for Toradex Colibri Vybrid
module.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
Reviewed-by: Stefano Babic <sbabic@denx.de>
---
 board/toradex/colibri_vf/dcu.c | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 board/toradex/colibri_vf/dcu.c

(limited to 'board/toradex/colibri_vf/dcu.c')

diff --git a/board/toradex/colibri_vf/dcu.c b/board/toradex/colibri_vf/dcu.c
new file mode 100644
index 0000000000..3fa6a763d8
--- /dev/null
+++ b/board/toradex/colibri_vf/dcu.c
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2017 Toradex AG
+ *
+ * FSL DCU platform driver
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <asm/arch/crm_regs.h>
+#include <asm/io.h>
+#include <common.h>
+#include <fsl_dcu_fb.h>
+#include "div64.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+unsigned int dcu_set_pixel_clock(unsigned int pixclock)
+{
+	struct ccm_reg *ccm = (struct ccm_reg *)CCM_BASE_ADDR;
+	unsigned long long div;
+
+	clrbits_le32(&ccm->cscmr1, CCM_CSCMR1_DCU0_CLK_SEL);
+	clrsetbits_le32(&ccm->cscdr3,
+			CCM_CSCDR3_DCU0_DIV_MASK | CCM_CSCDR3_DCU0_EN,
+			CCM_CSCDR3_DCU0_DIV(0) | CCM_CSCDR3_DCU0_EN);
+	div = (unsigned long long)(PLL1_PFD2_FREQ / 1000);
+	do_div(div, pixclock);
+
+	return div;
+}
+
+int platform_dcu_init(unsigned int xres, unsigned int yres,
+		      const char *port,
+		      struct fb_videomode *dcu_fb_videomode)
+{
+	fsl_dcu_init(xres, yres, 32);
+
+	return 0;
+}
-- 
cgit