soc/intel/{adl, cmn}: Allow config to select the OCP workaround

This patch introduces a config option for SoC code to choose
the applicable SoC workaround.

For now, we have introduced `SOC_INTEL_UFS_OCP_TIMER_DISABLE`
to apply UFS OCP timeout disable workaround.

At present ADL SoC only selects so, and in future MTL and others
should check with Intel prior selecting this kconfig.

It's the placeholder to add more workaround in required going forward.

BUG=none
TEST=Able to build and boot Google/Brya.

Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: Ia2364d2de9725256dfa2269f2feb3d892c52086a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68309
Reviewed-by: Reka Norman <rekanorman@chromium.org>
Reviewed-by: Kangheui Won <khwon@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>

src/soc/intel/alderlake/Kconfig

@@ -425,6 +425,13 @@ config ACPI_ADL_IPU_ES_SUPPORT
 	help
 	  Enables ACPI entry to provide silicon type information to IPU kernel driver.
 
+config ALDERLAKE_ENABLE_SOC_WORKAROUND
+	bool
+	default y
+	select SOC_INTEL_UFS_OCP_TIMER_DISABLE
+	help
+	  Selects the workarounds applicable for Alder Lake SoC.
+
 choice
 	prompt "Multiprocessor (MP) Initialization configuration to use"
 	default USE_FSP_MP_INIT

src/soc/intel/common/block/acpi/Kconfig

@@ -49,4 +49,11 @@ config SOC_INTEL_COMMON_BLOCK_ACPI_CPU_HYBRID
 	help
 	  Defines hybrid CPU specific ACPI helper functions.
 
+config SOC_INTEL_UFS_OCP_TIMER_DISABLE
+	bool
+	help
+	  OCP Timer need to be disabled in SCS UFS IOSF Bridge to
+	  work around the Silicon Issue due to which LTR mechanism
+	  doesn't work.
+
 endif

src/soc/intel/common/block/acpi/acpi/ufs.asl

@@ -67,8 +67,10 @@ Scope (\_SB.PCI0)
 			/* Set BIT[1:0] = 00b - Power State D0 */
 			PSTA &= 0xFFFFFFFC
 
+#if CONFIG(SOC_INTEL_UFS_OCP_TIMER_DISABLE)
 			/* Disable OCP Timer in SCS UFS IOSF Bridge */
 			OCPD ()
+#endif
 		}
 
 		Method (_PS3, 0, Serialized)
@@ -79,7 +81,9 @@ Scope (\_SB.PCI0)
 
 		Method (_INI)
 		{
+#if CONFIG(SOC_INTEL_UFS_OCP_TIMER_DISABLE)
 			OCPD ()
+#endif
 		}
 	}
 }