Changeset 9c0eba6 in mainline for uspace/drv/infrastructure/rootamdm37x/rootamdm37x.c

Timestamp:

2012-11-20T13:08:45Z (12 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

19acf24

Parents:

0c12dfe

Message:

rootamdm37x: IMplement IVA2 clock management and allow automatic LP transitions.

File:

• uspace/drv/infrastructure/rootamdm37x/rootamdm37x.c (modified) (5 diffs)

uspace/drv/infrastructure/rootamdm37x/rootamdm37x.c

@@ -48 +48 @@
 #include "uhh.h"
 #include "usbtll.h"
+
 #include "cm/core.h"
 #include "cm/clock_control.h"
 #include "cm/usbhost.h"
 #include "cm/mpu.h"
+#include "cm/iva2.h"
+
 #include "prm/clock_control.h"
 
@@ -61 +64 @@
         struct {
                 mpu_cm_regs_t *mpu;
+                iva2_cm_regs_t *iva2;
                 core_cm_regs_t *core;
                 clock_control_cm_regs_t *clocks;
@@ -101 +105 @@
                 return ret;
 
+        ret = pio_enable((void*)IVA2_CM_BASE_ADDRESS,
+                    IVA2_CM_SIZE, (void**)&device->cm.iva2);
+        if (ret != EOK)
+                return ret;
+
         ret = pio_enable((void*)CLOCK_CONTROL_PRM_BASE_ADDRESS,
             CLOCK_CONTROL_PRM_SIZE, (void**)&device->prm.clocks);
@@ -121 +130 @@
                 pio_trace_enable(device->cm.core, CORE_CM_SIZE, log, (void*)CORE_CM_BASE_ADDRESS);
                 pio_trace_enable(device->cm.mpu, MPU_CM_SIZE, log, (void*)MPU_CM_BASE_ADDRESS);
+                pio_trace_enable(device->cm.iva2, IVA2_CM_SIZE, log, (void*)IVA2_CM_BASE_ADDRESS);
                 pio_trace_enable(device->cm.usbhost, USBHOST_CM_SIZE, log, (void*)USBHOST_CM_BASE_ADDRESS);
                 pio_trace_enable(device->uhh, AMDM37x_UHH_SIZE, log, (void*)AMDM37x_UHH_BASE_ADDRESS);
@@ -204 +214 @@
          */
         // TODO: We can probably turn this off entirely. IVA is left unused.
-        // TODO: Set at least to autoidle to save power
+        /* Enable low power bypass mode, this will take effect the next lock or
+         * relock sequence. */
+        //TODO: We might need to force re-lock after enabling this
+        pio_set_32(&device->cm.iva2->clken_pll, MPU_CM_CLKEN_PLL_EN_MPU_DPLL_LP_MODE_FLAG, 5);
+        /* Enable automatic relocking */
+        pio_change_32(&device->cm.iva2->autoidle_pll, MPU_CM_AUTOIDLE_PLL_AUTO_MPU_DPLL_ENABLED, MPU_CM_AUTOIDLE_PLL_AUTO_MPU_DPLL_MASK, 5);
 
         /* DPLL3 provides tons of clocks: