Change in osmocom-bb[master]: firmware/board/gta0x: fix GPIO and ASIC_CONF_REG configuration

[Vadim Yanitskiy]

Vadim Yanitskiy has uploaded this change for review. ( https://gerrit.osmocom.org/12883


Change subject: firmware/board/gta0x: fix GPIO and ASIC_CONF_REG configuration
......................................................................

firmware/board/gta0x: fix GPIO and ASIC_CONF_REG configuration

Most Calypso peripheral interface signals are unconnected on
Openmoko GTA0x. Let's configure them to be GPIOs in IO_CONF_REG,
then configure them to be outputs in IO_CNTL_REG, then set
the outputs to 0 in ARMIO_LATCH_OUT.

Change-Id: I306ffacb623d2b06a188f84026ccadab408d1676
---
M src/target/firmware/board/gta0x/init.c
1 file changed, 10 insertions(+), 13 deletions(-)



  git pull ssh://gerrit.osmocom.org:29418/osmocom-bb refs/changes/83/12883/1

diff --git a/src/target/firmware/board/gta0x/init.c b/src/target/firmware/board/gta0x/init.c
index 4f49e80..b93f79c 100644
--- a/src/target/firmware/board/gta0x/init.c
+++ b/src/target/firmware/board/gta0x/init.c
@@ -49,29 +49,26 @@
 #define ARMIO_LATCH_OUT 0xfffe4802
 #define IO_CNTL_REG	0xfffe4804
 #define ASIC_CONF_REG	0xfffef008
+#define IO_CONF_REG	0xfffef00a
 
 static void board_io_init(void)
 {
 	uint16_t reg;
 
 	reg = readw(ASIC_CONF_REG);
-	/* LCD Set I/O(3) / SA0 to I/O(3) mode */
-	reg &= ~(1 << 10);
-	/* Set function pins to I2C Mode */
-	reg |= ((1 << 12) | (1 << 7));		/* SCL / SDA */
 	/* TWL3025: Set SPI+RIF RX clock to rising edge */
 	reg |= (1 << 13) | (1 << 14);
 	writew(reg, ASIC_CONF_REG);
 
-	/* LCD Set I/O(3) to output mode */
-	reg = readw(IO_CNTL_REG);
-	reg &= ~(1 << 3);
-	writew(reg, IO_CNTL_REG);
-
-	/* LCD Set I/O(3) output low */
-	reg = readw(ARMIO_LATCH_OUT);
-	reg &= ~(1 << 3);
-	writew(reg, ARMIO_LATCH_OUT);
+	/*
+	 * Most Calypso peripheral interface signals are unconnected
+	 * on this modem.  We configure them to be GPIOs in IO_CONF_REG,
+	 * then configure them to be outputs in IO_CNTL_REG, then set
+	 * the outputs to 0 in ARMIO_LATCH_OUT.
+	 */
+	writew(0x03F5, IO_CONF_REG);
+	writew(0xC000, IO_CNTL_REG);
+	writew(0x0000, ARMIO_LATCH_OUT);
 }
 
 void board_init(int with_irq)

-- 
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Gerrit-Project: osmocom-bb
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I306ffacb623d2b06a188f84026ccadab408d1676
Gerrit-Change-Number: 12883
Gerrit-PatchSet: 1
Gerrit-Owner: Vadim Yanitskiy <axilirator at gmail.com>
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