ARM: DRA72: disable workaround for 801819

[karo-tx-uboot.git] / arch / arm / cpu / armv7 / omap5 / hwinit.c

diff --git a/arch/arm/cpu/armv7/omap5/hwinit.c b/arch/arm/cpu/armv7/omap5/hwinit.c
index 39f8d0d5e20013d7a269e29682db436fbc18f8af..22e0829a6a0c2482328f6136ec1e6cf2160586bc 100644 (file)
--- a/arch/arm/cpu/armv7/omap5/hwinit.c
+++ b/arch/arm/cpu/armv7/omap5/hwinit.c
@@ -418,3 +418,20 @@ void v7_arch_cp15_set_l2aux_ctrl(u32 l2auxctrl, u32 cpu_midr,
 {
        omap_smc1(OMAP5_SERVICE_L2ACTLR_SET, l2auxctrl);
 }
+
+void v7_arch_cp15_set_acr(u32 acr, u32 cpu_midr, u32 cpu_rev_comb,
+                         u32 cpu_variant, u32 cpu_rev)
+{
+
+#ifdef CONFIG_ARM_ERRATA_801819
+       /*
+        * DRA72x processors are uniprocessors and DONOT have
+        * ACP (Accelerator Coherency Port) hooked to ACE (AXI Coherency
+        * Extensions) Hence the erratum workaround is not applicable for
+        * DRA72x processors.
+        */
+       if (is_dra72x())
+               acr &= ~((0x3 << 23) | (0x3 << 25));
+#endif
+       omap_smc1(OMAP5_SERVICE_ACR_SET, acr);
+}