On 6/21/18 11:23 PM, Vinod wrote:
On 21-06-18, 10:17, Timur Tabi wrote:
Add support for probing on ACPI systems, with ACPI HID QCOM8160.
On ACPI systems, clocks are always enabled, the PRNG should
already be enabled, and the register region is read-only.
The driver only verifies that the hardware is already
enabled never tries to disable or configure it.
so if you are using v2 hardware, are you pointing to High Level OS EE or
some other..?
I'm not sure what you mean.
+ /*
+ * ACPI systems have v2 hardware. The clocks are always enabled,
+ * the PRNG register space is read-only, and the PRNG should
+ * already be enabled.
+ */
+ if (has_acpi_companion(&pdev->dev)) {
+ u32 val;
+
+ val = readl(rng->base + PRNG_CONFIG);
v2 EEs dont seem to have CONFIG register, so not sure about this one
I can post the register set, but this works on my silicon. The first
device has all the registers. Then there are about 12-13 other devices
with their own 64K register regions, and those don't have a config
register.
I don't know why you would choose to support a one of the secondary
register sets when you can use the primary.
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