[coreboot-gerrit] Patch set updated for coreboot: 988600d armv7/pit: Setup EC on SPI2.

Gabe Black (gabeblack@chromium.org) gerrit at coreboot.org
Wed Jul 10 11:35:43 CEST 2013


Gabe Black (gabeblack at chromium.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/3707

-gerrit

commit 988600d4648d15b66c88f0f54bdb714a8f3935fd
Author: Hung-Te Lin <hungte at chromium.org>
Date:   Mon Jun 24 20:02:01 2013 +0800

    armv7/pit: Setup EC on SPI2.
    
    The Embedded Controller (EC) for Pit is connected via SPI2, and needs to be
    configured before we can talk to it.
    
    Change-Id: I1f8e921b4616f15951f3e5fae1ecbf116de4ba90
    Signed-off-by: Hung-Te Lin <hungte at chromium.org>
    Signed-off-by: Gabe Black <gabeblack at chromium.org>
---
 src/mainboard/google/pit/romstage.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/mainboard/google/pit/romstage.c b/src/mainboard/google/pit/romstage.c
index 41b64b2..7ba66a4 100644
--- a/src/mainboard/google/pit/romstage.c
+++ b/src/mainboard/google/pit/romstage.c
@@ -122,6 +122,14 @@ static void setup_storage(void)
 	exynos_pinmux_sdmmc2();
 }
 
+static void setup_ec(void)
+{
+	/* SPI2 (EC) is slower and needs to work in half-duplex mode with
+	 * single byte bus width. */
+	clock_set_rate(PERIPH_ID_SPI2, 500000);
+	exynos_pinmux_spi2();
+}
+
 static void setup_graphics(void)
 {
 	exynos_pinmux_dphpd();
@@ -271,6 +279,7 @@ void main(void)
 	setup_storage();
 	setup_gpio();
 	setup_graphics();
+	setup_ec();
 
 	simple_spi_test();
 	/* Set SPI (primary CBFS media) clock to 50MHz. */



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