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[ARM] Orion: support D0 5281 silicon
On D0 5281 SoCs, we need to disable the wait-for-interrupt instruction due to an erratum. Signed-off-by: Lennert Buytenhek <buytenh@marvell.com> Signed-off-by: Nicolas Pitre <nico@marvell.com> Acked-by: Martin Michlmayr <tbm@cyrius.com>
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2 changed files with 12 additions and 0 deletions
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@ -382,6 +382,8 @@ static void __init orion5x_id(u32 *dev, u32 *rev, char **dev_name)
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*dev_name = "MV88F5281-D2";
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} else if (*rev == MV88F5281_REV_D1) {
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*dev_name = "MV88F5281-D1";
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} else if (*rev == MV88F5281_REV_D0) {
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*dev_name = "MV88F5281-D0";
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} else {
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*dev_name = "MV88F5281-Rev-Unsupported";
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}
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@ -416,6 +418,15 @@ void __init orion5x_init(void)
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* Setup Orion address map
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*/
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orion5x_setup_cpu_mbus_bridge();
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/*
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* Don't issue "Wait for Interrupt" instruction if we are
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* running on D0 5281 silicon.
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*/
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if (dev == MV88F5281_DEV_ID && rev == MV88F5281_REV_D0) {
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printk(KERN_INFO "Orion: Applying 5281 D0 WFI workaround.\n");
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disable_hlt();
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}
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}
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/*
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@ -73,6 +73,7 @@
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#define MV88F5182_REV_A2 2
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/* Orion-2 (88F5281) */
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#define MV88F5281_DEV_ID 0x5281
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#define MV88F5281_REV_D0 4
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#define MV88F5281_REV_D1 5
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#define MV88F5281_REV_D2 6
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