1 files changed, 17 insertions, 0 deletions

diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index 357a0b8f860b..552010288135 100644
--- a/drivers/acpi/acpi_lpss.c
+++ b/drivers/acpi/acpi_lpss.c
@@ -75,6 +75,7 @@ struct lpss_device_desc {
         const char *clk_con_id;
         unsigned int prv_offset;
         size_t prv_size_override;
+        struct property_entry *properties;
         void (*setup)(struct lpss_private_data *pdata);
 };
 
@@ -163,11 +164,19 @@ static const struct lpss_device_desc lpt_i2c_dev_desc = {
         .prv_offset = 0x800,
 };
 
+static struct property_entry uart_properties[] = {
+        PROPERTY_ENTRY_U32("reg-io-width", 4),
+        PROPERTY_ENTRY_U32("reg-shift", 2),
+        PROPERTY_ENTRY_BOOL("snps,uart-16550-compatible"),
+        { },
+};
+
 static const struct lpss_device_desc lpt_uart_dev_desc = {
         .flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_LTR,
         .clk_con_id = "baudclk",
         .prv_offset = 0x800,
         .setup = lpss_uart_setup,
+        .properties = uart_properties,
 };
 
 static const struct lpss_device_desc lpt_sdio_dev_desc = {
@@ -189,6 +198,7 @@ static const struct lpss_device_desc byt_uart_dev_desc = {
         .clk_con_id = "baudclk",
         .prv_offset = 0x800,
         .setup = lpss_uart_setup,
+        .properties = uart_properties,
 };
 
 static const struct lpss_device_desc bsw_uart_dev_desc = {
@@ -197,6 +207,7 @@ static const struct lpss_device_desc bsw_uart_dev_desc = {
         .clk_con_id = "baudclk",
         .prv_offset = 0x800,
         .setup = lpss_uart_setup,
+        .properties = uart_properties,
 };
 
 static const struct lpss_device_desc byt_spi_dev_desc = {
@@ -440,6 +451,12 @@ static int acpi_lpss_create_device(struct acpi_device *adev,
                 goto err_out;
         }
 
+        if (dev_desc->properties) {
+                ret = device_add_properties(&adev->dev, dev_desc->properties);
+                if (ret)
+                        goto err_out;
+        }
+
         adev->driver_data = pdata;
         pdev = acpi_create_platform_device(adev);
         if (!IS_ERR_OR_NULL(pdev)) {