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Fix DDR6 errata on TQM834x boards
Patch by Thomas Waehner, 07 Mar 2006
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@ -2,6 +2,9 @@
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Changes since U-Boot 1.1.4:
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Changes since U-Boot 1.1.4:
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======================================================================
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======================================================================
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* Fix DDR6 errata on TQM834x boards
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Patch by Thomas Waehner, 07 Mar 2006
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* Remove obsolete flash driver board/tqm5200/flash.c
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* Remove obsolete flash driver board/tqm5200/flash.c
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Patch by Martin Krause, 11 Jan 2006
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Patch by Martin Krause, 11 Jan 2006
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@ -406,4 +406,28 @@ static void set_ddr_config(void) {
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(DDR_REFINT_166MHZ_7US << SDRAM_INTERVAL_REFINT_SHIFT) |
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(DDR_REFINT_166MHZ_7US << SDRAM_INTERVAL_REFINT_SHIFT) |
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(DDR_BSTOPRE << SDRAM_INTERVAL_BSTOPRE_SHIFT);
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(DDR_BSTOPRE << SDRAM_INTERVAL_BSTOPRE_SHIFT);
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SYNC;
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SYNC;
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/* Workaround for DDR6 Erratum
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* see MPC8349E Device Errata Rev.8, 2/2006
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* This workaround influences the MPC internal "input enables"
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* dependent on CAS latency and MPC revision. According to errata
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* sheet the internal reserved registers for this workaround are
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* not available from revision 2.0 and up.
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*/
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/* Get REVID from register SPRIDR. Skip workaround if rev >= 2.0
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* (0x200)
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*/
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if ((im->sysconf.spridr & SPRIDR_REVID) < 0x200) {
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/* There is a internal reserved register at IMMRBAR+0x2F00
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* which has to be written with a certain value defined by
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* errata sheet.
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*/
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#if defined(DDR_CASLAT_20)
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*((u8 *)im + 0x2f00) = 0x201c0000;
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#else
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*((u8 *)im + 0x2f00) = 0x202c0000;
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#endif
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}
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}
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}
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