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Fix lwmon5 dsp POST sequence.

PATCH New sascha.laue at liebherr.com 3 participants 3 messages May 30, 2008 – Jul 7, 2008

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#0 lore raw

PATCH 1/1 Fix lwmon5 dsp POST sequence.

From: Sascha Laue <[email protected]>

Signed-off-by Sascha Laue <[email protected]>
---
 post/board/lwmon5/dsp.c |   21 +++++++++++++++++++--
 1 files changed, 19 insertions(+), 2 deletions(-)
post/board/lwmon5/dsp.c +19 -2
index a96ac7d..bc12e42 100644
@@ -33,20 +33,37 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-#define DSP_STATUS_REG 0xC4000008
+#define DSP_STATUS_REG     0xC4000008
+#define FPGA_STATUS_REG    0xC400000C
 
 int dsp_post_test(int flags)
 {
+	uint   old_value;
 	uint   read_value;
 	int    ret;
+	
+	/* momorize fpga status */
+	old_value = in_be32((void *)FPGA_STATUS_REG);
+	/* enable outputs */
+	out_be32((void *)FPGA_STATUS_REG, 0x30);
+	
+	/* generate sync signal */
+	out_be32((void *)DSP_STATUS_REG, 0x300);
+	udelay(5);
+	out_be32((void *)DSP_STATUS_REG, 0);
+	udelay(500);
 
+	/* read status */	
 	ret = 0;
 	read_value = in_be32((void *)DSP_STATUS_REG) & 0x3;
-	if (read_value != 0x3) {
+	if (!(read_value & 0x3)) {
 		post_log("\nDSP status read %08X\n", read_value);
 		ret = 1;
 	}
 
+	/* restore fpga status */
+	out_be32((void *)FPGA_STATUS_REG, old_value);
+
 	return ret;
 }
Signature · 1 line
1.5.2.4
#1 lore raw

PATCH 1/1 Fix lwmon5 dsp POST sequence.

post/board/lwmon5/dsp.c line 45

Quoted 2 lines · In message <[email protected]> you wrote:
post/board/lwmon5/dsp.c +1 -0
+	/* momorize fpga status */

momorize ?

Best regards,

Wolfgang Denk

Signature · 5 lines
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Those who do not  understand  Unix  are  condemned  to  reinvent  it,
poorly.              - Henry Spencer, University of Toronto Unix hack
#2 lore raw

PATCH 1/1 Fix lwmon5 dsp POST sequence.

Quoted 1 line · Wolfgang Denk

In message <[email protected]> you

Quoted 3 lines · wrote:

post/board/lwmon5/dsp.c line 45

Quoted 1 line
post/board/lwmon5/dsp.c +1 -0
+	/* momorize fpga status */

momorize ?

Sascha, please fix and resubmit. Thanks.

Best regards,
Stefan

=====================================================================
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: office at denx.de
=====================================================================