This patch adds hwmod entry for davinci MDIO module,
creating parent<->child relationship between CPSW and MDIO module.
This Parent-child relation is required in order to use common resources
like, clock, but still maintaining the logical separation between them.
CPGMAC SubSystem consist of various sub-modules, like, mdio, cpdma,
cpsw, etc... These sub-modules are also used in some of Davinci
family of devices, so separate and independent platform devices &
drivers for CPSW and MDIO is implemented.
In case of AM33XX, the resources are shared and common register
bit-field is provided to control module/clock enable/disable,
makes it difficult to handle common resources from both drivers.
So the solution is, create parent<->child relationship between
CPGMAC & MDIO modules.
Signed-off-by: Mugunthan V N <mugunthanvnm@xxxxxx>
Signed-off-by: Vaibhav Hiremath <hvaibhav@xxxxxx>
Cc: Richard Cochran <richardcochran@xxxxxxxxx>
Cc: Paul Walmsley <paul@xxxxxxxxx>
---
arch/arm/mach-omap2/omap_hwmod_33xx_data.c | 32 ++++++++++++++++++++++++++++
1 files changed, 32 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/omap_hwmod_33xx_data.c b/arch/arm/mach-omap2/omap_hwmod_33xx_data.c
index 59d5c1c..b3f9ce4 100644
--- a/arch/arm/mach-omap2/omap_hwmod_33xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_33xx_data.c
@@ -674,6 +674,7 @@ static struct omap_hwmod am33xx_cpgmac0_hwmod = {
.name = "cpgmac0",
.class = &am33xx_cpgmac0_hwmod_class,
.clkdm_name = "cpsw_125mhz_clkdm",
+ .flags = (HWMOD_SWSUP_SIDLE | HWMOD_SWSUP_MSTANDBY),
.mpu_irqs = am33xx_cpgmac0_irqs,
.main_clk = "cpsw_125mhz_gclk",
.prcm = {
@@ -685,6 +686,20 @@ static struct omap_hwmod am33xx_cpgmac0_hwmod = {
};
/*
+ * mdio class
+ */
+static struct omap_hwmod_class am33xx_mdio_hwmod_class = {
+ .name = "davinci_mdio",
+};
+
+static struct omap_hwmod am33xx_mdio_hwmod = {
+ .name = "davinci_mdio",
+ .class = &am33xx_mdio_hwmod_class,
+ .clkdm_name = "cpsw_125mhz_clkdm",
+ .main_clk = "cpsw_125mhz_gclk",
+};
+
+/*
* dcan class
*/
static struct omap_hwmod_class am33xx_dcan_hwmod_class = {
@@ -2501,6 +2516,22 @@ static struct omap_hwmod_ocp_if am33xx_l4_hs__cpgmac0 = {
.user = OCP_USER_MPU,
};
+struct omap_hwmod_addr_space am33xx_mdio_addr_space[] = {
+ {
+ .pa_start = 0x4A101000,
+ .pa_end = 0x4A101000 + SZ_256 - 1,
+ .flags = ADDR_MAP_ON_INIT,
+ },
+ { }
+};
+
+struct omap_hwmod_ocp_if am33xx_cpgmac0__mdio = {
+ .master = &am33xx_cpgmac0_hwmod,
+ .slave = &am33xx_mdio_hwmod,
+ .addr = am33xx_mdio_addr_space,
+ .user = OCP_USER_MPU,
+};
+
static struct omap_hwmod_addr_space am33xx_elm_addr_space[] = {
{
.pa_start = 0x48080000,
@@ -3371,6 +3402,7 @@ static struct omap_hwmod_ocp_if *am33xx_hwmod_ocp_ifs[] __initdata = {
&am33xx_l3_main__tptc2,
&am33xx_l3_s__usbss,
&am33xx_l4_hs__cpgmac0,
+ &am33xx_cpgmac0__mdio,
NULL,
};
--
1.7.0.4
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