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* [U-Boot] [PATCH v3 1/2] armv8: layerscape: Enable EHCI access for LS1012A
@ 2018-08-03  7:55 Ran Wang
  2018-08-03  7:55 ` [U-Boot] [PATCH v3 2/2] armv8: layerscape: move ns_dev[] define from h to c file Ran Wang
  0 siblings, 1 reply; 4+ messages in thread
From: Ran Wang @ 2018-08-03  7:55 UTC (permalink / raw)
  To: u-boot

Program Central Security Unit (CSU) to grant access
permission for USB 2.0 controller, otherwiase EHCI funciton will down.

Signed-off-by: Ran Wang <ran.wang_1@nxp.com>
---
Change in v3:
	- None

Change in v2:
    - Add EL checking code to make sure related programming only happen
      in EL3

 arch/arm/cpu/armv8/fsl-layerscape/soc.c              | 9 +++++++++
 arch/arm/include/asm/arch-fsl-layerscape/ns_access.h | 1 +
 2 files changed, 10 insertions(+)

diff --git a/arch/arm/cpu/armv8/fsl-layerscape/soc.c b/arch/arm/cpu/armv8/fsl-layerscape/soc.c
index 6a56269..d8c3083 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/soc.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/soc.c
@@ -14,6 +14,7 @@
 #include <asm/io.h>
 #include <asm/global_data.h>
 #include <asm/arch-fsl-layerscape/config.h>
+#include <asm/arch-fsl-layerscape/ns_access.h>
 #ifdef CONFIG_LAYERSCAPE_NS_ACCESS
 #include <fsl_csu.h>
 #endif
@@ -668,6 +669,14 @@ void fsl_lsch2_early_init_f(void)
 			 CCI400_DVM_MESSAGE_REQ_EN | CCI400_SNOOP_REQ_EN);
 	}
 
+	/*
+	 * Program Central Security Unit (CSU) to grant access
+	 * permission for USB 2.0 controller
+	 */
+#if defined(CONFIG_ARCH_LS1012A) && defined(CONFIG_USB_EHCI_FSL)
+	if (current_el() == 3)
+		set_devices_ns_access(CSU_CSLX_USB_2, CSU_ALL_RW);
+#endif
 	/* Erratum */
 	erratum_a008850_early(); /* part 1 of 2 */
 	erratum_a009929();
diff --git a/arch/arm/include/asm/arch-fsl-layerscape/ns_access.h b/arch/arm/include/asm/arch-fsl-layerscape/ns_access.h
index fe97a93..d1b8efa 100644
--- a/arch/arm/include/asm/arch-fsl-layerscape/ns_access.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/ns_access.h
@@ -40,6 +40,7 @@ enum csu_cslx_ind {
 	CSU_CSLX_ESDHC,
 	CSU_CSLX_IFC = 45,
 	CSU_CSLX_I2C1,
+	CSU_CSLX_USB_2,
 	CSU_CSLX_I2C3 = 48,
 	CSU_CSLX_I2C2,
 	CSU_CSLX_DUART2 = 50,
-- 
2.7.4

^ permalink raw reply related	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2018-08-10  3:10 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-08-03  7:55 [U-Boot] [PATCH v3 1/2] armv8: layerscape: Enable EHCI access for LS1012A Ran Wang
2018-08-03  7:55 ` [U-Boot] [PATCH v3 2/2] armv8: layerscape: move ns_dev[] define from h to c file Ran Wang
2018-08-09 19:45   ` York Sun
2018-08-10  3:10     ` Ran Wang

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