Changeset 19acf24 in mainline for uspace/drv/infrastructure/rootamdm37x/rootamdm37x.c

Timestamp:

2012-11-20T13:42:00Z (11 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

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

Children:

bf6f6ca

Parents:

9c0eba6

Message:

rootamdm37x: Print Core clock and l3 interface clock values.

File:

• uspace/drv/infrastructure/rootamdm37x/rootamdm37x.c (modified) (1 diff)

uspace/drv/infrastructure/rootamdm37x/rootamdm37x.c

@@ -227 +227 @@
          * interconnects.
          */
+        if (pio_read_32(&device->cm.clocks->idlest_ckgen) & CLOCK_CONTROL_CM_IDLEST_CKGEN_ST_CORE_CLK_FLAG) {
+                /* DPLL active and locked */
+                const uint32_t reg =
+                    pio_read_32(&device->cm.clocks->clksel1_pll);
+                const unsigned multiplier =
+                    CLOCK_CONTROL_CM_CLKSEL1_PLL_CORE_DPLL_MULT_GET(reg);
+                const unsigned divisor =
+                    CLOCK_CONTROL_CM_CLKSEL1_PLL_CORE_DPLL_DIV_GET(reg);
+                const unsigned divisor2 =
+                    CLOCK_CONTROL_CM_CLKSEL1_PLL_CORE_DPLL_CLKOUT_DIV_GET(reg);
+                if (multiplier && divisor && divisor2) {
+                        const unsigned freq =
+                            ((base_freq / divisor) * multiplier) / divisor2;
+                        ddf_msg(LVL_NOTE, "CORE CLK running at %d.%d MHz",
+                            freq / 1000, freq % 1000);
+                        const unsigned l3_div =
+                            pio_read_32(&device->cm.core->clksel)
+                            & CORE_CM_CLKSEL_CLKSEL_L3_MASK;
+                        if (l3_div == CORE_CM_CLKSEL_CLKSEL_L3_DIVIDED1 ||
+                            l3_div == CORE_CM_CLKSEL_CLKSEL_L3_DIVIDED2) {
+                                ddf_msg(LVL_NOTE, "L3 interface at %d.%d MHz",
+                                    (freq / l3_div) / 1000,
+                                    (freq / l3_div) % 1000);
+                        } else {
+                                ddf_msg(LVL_WARN,"L3 interface clock divisor is"
+                                    " invalid: %d", l3_div);
+                        }
+                } else {
+                        ddf_msg(LVL_WARN, "DPLL3 frequency divisor and/or "
+                            "multiplier value invalid: %d %d %d",
+                            multiplier, divisor, divisor2);
+                }
+        } else {
+                ddf_msg(LVL_WARN, "CORE CLK in bypass mode, fruunig at SYS_CLK"
+                   " frreq of %d.%d MHz", base_freq / 1000, base_freq % 1000);
+        }
 
         /* Set DPLL3 to automatic to save power */