Improved GPIO setup for roda/rk886ex, and some documentation

on what the GPIOs are used for.

Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Acked-by: Stefan Reinauer <stepan@coreboot.org>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6254 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

diff --git a/src/mainboard/roda/rk886ex/romstage.c b/src/mainboard/roda/rk886ex/romstage.c
index 80afe80745a1d3fcea0d0d1561ba3b466ead0be5..cf36c7cda7e2d7b3511007b41d1bd3e83d142fcc 100644 (file)
--- a/src/mainboard/roda/rk886ex/romstage.c
+++ b/src/mainboard/roda/rk886ex/romstage.c
@@ -43,14 +43,27 @@ void setup_ich7_gpios(void)
        /* General Registers */
        outl(0xbfc0f7c0, DEFAULT_GPIOBASE + 0x00);      /* GPIO_USE_SEL */
        outl(0x70a87d83, DEFAULT_GPIOBASE + 0x04);      /* GP_IO_SEL */
-       outl(0x7dc07f83, DEFAULT_GPIOBASE + 0x0c);      /* GP_LVL */
+       // ------------------------------------------------------------
+       // 0 - GPO6  - Enable power of SATA channel 0
+       // 0 - GPO9  - Wireless LAN power on
+       // 0 - GPO15 - FAN on
+       // 1 - GPO22 - FWH WP
+       // 1 - GPO24 - GPS on
+       // 0 - GPO25 - External Antenna Mux on
+       // 0 - GPO26 - BT on
+       // 0 - GPO27 - GSM on
+       outl(0x01400000, DEFAULT_GPIOBASE + 0x0c);      /* GP_LVL */
+       // ------------------------------------------------------------
        /* Output Control Registers */
        outl(0x00000000, DEFAULT_GPIOBASE + 0x18);      /* GPO_BLINK */
        /* Input Control Registers */
        outl(0x00002180, DEFAULT_GPIOBASE + 0x2c);      /* GPI_INV */
        outl(0x000100e8, DEFAULT_GPIOBASE + 0x30);      /* GPIO_USE_SEL2 */
        outl(0x00000030, DEFAULT_GPIOBASE + 0x34);      /* GP_IO_SEL2 */
-       outl(0x00010030, DEFAULT_GPIOBASE + 0x38);      /* GP_LVL */
+       // ------------------------------------------------------------
+       // 1 - GPO48 - FWH TBL#
+       outl(0x00010000, DEFAULT_GPIOBASE + 0x38);      /* GP_LVL */
+       // ------------------------------------------------------------
 }
 
 static void ich7_enable_lpc(void)