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@@ -124,6 +124,44 @@ u32 get_cpu_speed_grade_hz(void)
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return 0;
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}
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+/*
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+ * OCOTP_MEM0[7:6] (see Fusemap Description Table offset 0x480)
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+ * defines a 2-bit Temperature Grade
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+ *
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+ * return temperature grade and min/max temperature in celcius
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+ */
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+#define OCOTP_MEM0_TEMP_SHIFT 6
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+
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+u32 get_cpu_temp_grade(int *minc, int *maxc)
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+{
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+ struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
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+ struct fuse_bank *bank = &ocotp->bank[1];
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+ struct fuse_bank1_regs *fuse =
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+ (struct fuse_bank1_regs *)bank->fuse_regs;
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+ uint32_t val;
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+
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+ val = readl(&fuse->mem0);
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+ val >>= OCOTP_MEM0_TEMP_SHIFT;
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+ val &= 0x3;
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+
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+ if (minc && maxc) {
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+ if (val == TEMP_AUTOMOTIVE) {
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+ *minc = -40;
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+ *maxc = 125;
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+ } else if (val == TEMP_INDUSTRIAL) {
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+ *minc = -40;
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+ *maxc = 105;
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+ } else if (val == TEMP_EXTCOMMERCIAL) {
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+ *minc = -20;
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+ *maxc = 105;
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+ } else {
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+ *minc = 0;
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+ *maxc = 95;
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+ }
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+ }
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+ return val;
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+}
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+
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#ifdef CONFIG_REVISION_TAG
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u32 __weak get_board_rev(void)
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{
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