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Date: Tue, 1 Mar 2022 22:50:56 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Lee Jones <lee.jones@...aro.org>, linux-kernel@...r.kernel.org
Subject: [PATCH v1 1/1] mfd: intel-lpss: Provide an SSP type to the driver
The SPI driver wants to know the exact type of the controller.
Provide this information to it, hence it allows to fix the
Intel Cannon Lake and others in the future.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
drivers/mfd/intel-lpss-acpi.c | 41 ++++++++++++++++++++++++++++++++---
1 file changed, 38 insertions(+), 3 deletions(-)
diff --git a/drivers/mfd/intel-lpss-acpi.c b/drivers/mfd/intel-lpss-acpi.c
index f2ea6540a01e..a143c8dca2d9 100644
--- a/drivers/mfd/intel-lpss-acpi.c
+++ b/drivers/mfd/intel-lpss-acpi.c
@@ -15,11 +15,22 @@
#include <linux/pm_runtime.h>
#include <linux/platform_device.h>
#include <linux/property.h>
+#include <linux/pxa2xx_ssp.h>
#include "intel-lpss.h"
+static const struct property_entry spt_spi_properties[] = {
+ PROPERTY_ENTRY_U32("intel,spi-pxa2xx-type", LPSS_SPT_SSP),
+ { }
+};
+
+static const struct software_node spt_spi_node = {
+ .properties = spt_spi_properties,
+};
+
static const struct intel_lpss_platform_info spt_info = {
.clk_rate = 120000000,
+ .swnode = &spt_spi_node,
};
static const struct property_entry spt_i2c_properties[] = {
@@ -53,8 +64,18 @@ static const struct intel_lpss_platform_info spt_uart_info = {
.swnode = &uart_node,
};
+static const struct property_entry bxt_spi_properties[] = {
+ PROPERTY_ENTRY_U32("intel,spi-pxa2xx-type", LPSS_BXT_SSP),
+ { }
+};
+
+static const struct software_node bxt_spi_node = {
+ .properties = bxt_spi_properties,
+};
+
static const struct intel_lpss_platform_info bxt_info = {
.clk_rate = 100000000,
+ .swnode = &bxt_spi_node,
};
static const struct property_entry bxt_i2c_properties[] = {
@@ -89,6 +110,20 @@ static const struct intel_lpss_platform_info apl_i2c_info = {
.swnode = &apl_i2c_node,
};
+static const struct property_entry cnl_spi_properties[] = {
+ PROPERTY_ENTRY_U32("intel,spi-pxa2xx-type", LPSS_CNL_SSP),
+ { }
+};
+
+static const struct software_node cnl_spi_node = {
+ .properties = cnl_spi_properties,
+};
+
+static const struct intel_lpss_platform_info cnl_info = {
+ .clk_rate = 120000000,
+ .swnode = &cnl_spi_node,
+};
+
static const struct intel_lpss_platform_info cnl_i2c_info = {
.clk_rate = 216000000,
.swnode = &spt_i2c_node,
@@ -108,8 +143,8 @@ static const struct acpi_device_id intel_lpss_acpi_ids[] = {
{ "INT3449", (kernel_ulong_t)&spt_uart_info },
{ "INT344A", (kernel_ulong_t)&spt_uart_info },
/* CNL */
- { "INT34B0", (kernel_ulong_t)&spt_info },
- { "INT34B1", (kernel_ulong_t)&spt_info },
+ { "INT34B0", (kernel_ulong_t)&cnl_info },
+ { "INT34B1", (kernel_ulong_t)&cnl_info },
{ "INT34B2", (kernel_ulong_t)&cnl_i2c_info },
{ "INT34B3", (kernel_ulong_t)&cnl_i2c_info },
{ "INT34B4", (kernel_ulong_t)&cnl_i2c_info },
@@ -119,7 +154,7 @@ static const struct acpi_device_id intel_lpss_acpi_ids[] = {
{ "INT34B8", (kernel_ulong_t)&spt_uart_info },
{ "INT34B9", (kernel_ulong_t)&spt_uart_info },
{ "INT34BA", (kernel_ulong_t)&spt_uart_info },
- { "INT34BC", (kernel_ulong_t)&spt_info },
+ { "INT34BC", (kernel_ulong_t)&cnl_info },
/* BXT */
{ "80860AAC", (kernel_ulong_t)&bxt_i2c_info },
{ "80860ABC", (kernel_ulong_t)&bxt_info },
--
2.34.1
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