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net: designware: socfpga: Add ATF support for MAC driver 

In non-secure mode (EL2), MAC driver calls the SMC/PSCI services
provided by ATF to setup the PHY interface.

Signed-off-by: Chee Hong Ang <chee.hong.ang@intel.com>
Signed-off-by: Siew Chin Lim <elly.siew.chin.lim@intel.com>
This commit is contained in:
Chee Hong Ang 2020-12-24 18:21:05 +08:00 committed by Ley Foon Tan
parent 6b38cc2f2b
commit a90ae0167b
1 changed files with 31 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
drivers/net/dwmac_socfpga.c
View File

@ -6,6 +6,8 @@
*/
#include <common.h>
#include <asm/arch/secure_reg_helper.h>
#include <asm/arch/system_manager.h>
#include <asm/io.h>
#include <dm.h>
#include <clk.h>
@ -17,8 +19,6 @@
#include <dm/device_compat.h>
#include <linux/err.h>
#include <asm/arch/system_manager.h>
struct dwmac_socfpga_plat {
struct dw_eth_pdata dw_eth_pdata;
void *phy_intf;
@ -64,6 +64,32 @@ static int dwmac_socfpga_of_to_plat(struct udevice *dev)
return designware_eth_of_to_plat(dev);
}
static int dwmac_socfpga_do_setphy(struct udevice *dev, u32 modereg)
{
struct dwmac_socfpga_plat *pdata = dev_get_plat(dev);
u32 modemask = SYSMGR_EMACGRP_CTRL_PHYSEL_MASK << pdata->reg_shift;
#if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_ATF)
u32 index = ((u64)pdata->phy_intf - socfpga_get_sysmgr_addr() -
SYSMGR_SOC64_EMAC0) >> 2;
u32 id = SOCFPGA_SECURE_REG_SYSMGR_SOC64_EMAC0 + index;
int ret = socfpga_secure_reg_update32(id,
modemask,
modereg << pdata->reg_shift);
if (ret) {
dev_err(dev, "Failed to set PHY register via SMC call\n");
return ret;
}
#else
clrsetbits_le32(pdata->phy_intf, modemask,
modereg << pdata->reg_shift);
#endif
return 0;
}
static int dwmac_socfpga_probe(struct udevice *dev)
{
struct dwmac_socfpga_plat *pdata = dev_get_plat(dev);
@ -71,7 +97,6 @@ static int dwmac_socfpga_probe(struct udevice *dev)
struct reset_ctl_bulk reset_bulk;
int ret;
u32 modereg;
u32 modemask;
switch (edata->phy_interface) {
case PHY_INTERFACE_MODE_MII:
@ -97,9 +122,9 @@ static int dwmac_socfpga_probe(struct udevice *dev)
reset_assert_bulk(&reset_bulk);
modemask = SYSMGR_EMACGRP_CTRL_PHYSEL_MASK << pdata->reg_shift;
clrsetbits_le32(pdata->phy_intf, modemask,
modereg << pdata->reg_shift);
ret = dwmac_socfpga_do_setphy(dev, modereg);
if (ret)
return ret;
reset_release_bulk(&reset_bulk);