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ACPI / LPSS: add LPSS device for Wildcat Point PCH 

INT3438 is the ADSP device on Wildcat Point platform
with 2 DW DMA engines built In. The DMA engines are
used for DSP FW loading and audio data transferring.
These DMA engine probing need the clock, without it,
probing may failed and can't go forward.

Add LPSS device "INT3438" for Wildcat Point PCH, to
provide clock for its ADSP DMA engine probing.

Signed-off-by: Jie Yang <yang.jie@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Jie Yang 2014-08-01 09:06:35 +08:00 committed by Rafael J. Wysocki
parent 64aa90f26c
commit 43218a1b3b
1 changed files with 10 additions and 0 deletions
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10
drivers/acpi/acpi_lpss.c
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@ -113,6 +113,14 @@ static void lpss_i2c_setup(struct lpss_private_data *pdata)
writel(val, pdata->mmio_base + offset);
}
static struct lpss_device_desc wpt_dev_desc = {
.clk_required = true,
.prv_offset = 0x800,
.ltr_required = true,
.clk_divider = true,
.clk_gate = true,
};
static struct lpss_device_desc lpt_dev_desc = {
.clk_required = true,
.prv_offset = 0x800,
@ -226,6 +234,8 @@ static const struct acpi_device_id acpi_lpss_device_ids[] = {
{ "INT3436", LPSS_ADDR(lpt_sdio_dev_desc) },
{ "INT3437", },
{ "INT3438", LPSS_ADDR(wpt_dev_desc) },
{ }
};