imx233: add comment about block reset

fuze+: reset the controller for all lcd types, should fix the "CRT effet"

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31234 a1c6a512-1295-4272-9138-f99709370657

2 files changed, 8 insertions, 7 deletions

diff --git a/firmware/target/arm/imx233/lcdif-imx233.h b/firmware/target/arm/imx233/lcdif-imx233.h
index 970b8661e5..b685cdcd86 100644
--- a/firmware/target/arm/imx233/lcdif-imx233.h
+++ b/firmware/target/arm/imx233/lcdif-imx233.h
@@ -85,7 +85,7 @@
 
 void imx233_lcdif_enable_bus_master(bool enable);
 void imx233_lcdif_enable(bool enable);
-void imx233_lcdif_reset(void);
+void imx233_lcdif_reset(void);// reset lcdif block
 void imx233_lcdif_set_timings(unsigned data_setup, unsigned data_hold,
     unsigned cmd_setup, unsigned cmd_hold);
 void imx233_lcdif_set_lcd_databus_width(unsigned width);
diff --git a/firmware/target/arm/imx233/sansa-fuzeplus/lcd-fuzeplus.c b/firmware/target/arm/imx233/sansa-fuzeplus/lcd-fuzeplus.c
index 6bc6252506..140e448630 100644
--- a/firmware/target/arm/imx233/sansa-fuzeplus/lcd-fuzeplus.c
+++ b/firmware/target/arm/imx233/sansa-fuzeplus/lcd-fuzeplus.c
@@ -247,12 +247,6 @@ static void lcd_send_sequence(struct lcd_sequence_entry_t *seq, unsigned count)
 
 static void lcd_init_seq_7783(void)
 {
-    __REG_SET(HW_LCDIF_CTRL1) = HW_LCDIF_CTRL1__RESET;
-    mdelay(50);
-    __REG_CLR(HW_LCDIF_CTRL1) = HW_LCDIF_CTRL1__RESET;
-    mdelay(10);
-    __REG_SET(HW_LCDIF_CTRL1) = HW_LCDIF_CTRL1__RESET;
-
     _begin_seq()
     _mdelay(200)
     _lcd_write_reg(1, 0x100)
@@ -377,6 +371,13 @@ void lcd_init_device(void)
         if(lcd_kind == LCD_KIND_7783 || lcd_kind == LCD_KIND_9325)
             break;
     }
+    // reset device
+    __REG_SET(HW_LCDIF_CTRL1) = HW_LCDIF_CTRL1__RESET;
+    mdelay(50);
+    __REG_CLR(HW_LCDIF_CTRL1) = HW_LCDIF_CTRL1__RESET;
+    mdelay(10);
+    __REG_SET(HW_LCDIF_CTRL1) = HW_LCDIF_CTRL1__RESET;
+
     switch(lcd_kind)
     {
         case LCD_KIND_7783: lcd_init_seq_7783(); break;