diff --git a/firmware/drivers/lcd-h300.c b/firmware/drivers/lcd-h300.c
index 149062be96..bb2f9ec777 100644
--- a/firmware/drivers/lcd-h300.c
+++ b/firmware/drivers/lcd-h300.c
@@ -89,20 +89,12 @@ inline void lcd_begin_write_gram(void)
     *(volatile unsigned short *)0xf0000000 = R_WRITE_DATA_2_GRAM;
 }
 
-void lcd_write_data(const unsigned short* p_bytes, int count) ICODE_ATTR;
-void lcd_write_data(const unsigned short* p_bytes, int count)
+/* called very frequently - inline! */
+inline void lcd_write_data(const unsigned short* p_bytes, int count) ICODE_ATTR;
+inline void lcd_write_data(const unsigned short* p_bytes, int count)
 {
-    SAR1 = (unsigned long)p_bytes; /* Destination address */
-    while(count)
-    {
-        int cnt = MIN(count, 256);
-        DAR1 = (unsigned long)0xf0000002; /* Destination address */
-        BCR1 = cnt*2;          /* Bytes to transfer */
-        DCR1 = 0x02000000 | DMA_SINC | (2 << 20) | (2 << 17) | DMA_START;
-        while(!(DSR1 & 1)) {};
-        DSR1 = 1;
-        count -= cnt;
-    }
+    while(count--)
+        *(volatile unsigned short *)0xf0000002 = *p_bytes++;
 }
 
 /*** hardware configuration ***/
@@ -139,9 +131,6 @@ void lcd_roll(int lines)
 /* LCD init */
 void lcd_init_device(void)
 {
-    MPARK = 0x81;    /* PARK[1,0]=10 + BCR24BIT */
-    DSR1 = 1;
-
     /* GPO46 is LCD RESET */
     or_l(0x00004000, &GPIO1_OUT);
     or_l(0x00004000, &GPIO1_ENABLE);