Commit 43569814 authored by Phil Reid's avatar Phil Reid Committed by David S. Miller

stmmac: socfpga: Provide dt node to config ptp clk source.

Provides an options to use the ptp clock routed from the Altera FPGA
fabric. Instead of the defalt eosc1 clock connected to the ARM HPS core.
This setting affects all emacs in the core as the ptp clock is common.
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarPhil Reid <preid@electromag.com.au>
Acked-by: default avatarDinh Nguyen <dinguyen@opensource.altera.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 19d857c9
...@@ -11,6 +11,8 @@ Required properties: ...@@ -11,6 +11,8 @@ Required properties:
designware version numbers documented in stmmac.txt designware version numbers documented in stmmac.txt
- altr,sysmgr-syscon : Should be the phandle to the system manager node that - altr,sysmgr-syscon : Should be the phandle to the system manager node that
encompasses the glue register, the register offset, and the register shift. encompasses the glue register, the register offset, and the register shift.
- altr,f2h_ptp_ref_clk use f2h_ptp_ref_clk instead of default eosc1 clock
for ptp ref clk. This affects all emacs as the clock is common.
Optional properties: Optional properties:
altr,emac-splitter: Should be the phandle to the emac splitter soft IP node if altr,emac-splitter: Should be the phandle to the emac splitter soft IP node if
......
...@@ -32,6 +32,7 @@ ...@@ -32,6 +32,7 @@
#define SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RMII 0x2 #define SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_RMII 0x2
#define SYSMGR_EMACGRP_CTRL_PHYSEL_WIDTH 2 #define SYSMGR_EMACGRP_CTRL_PHYSEL_WIDTH 2
#define SYSMGR_EMACGRP_CTRL_PHYSEL_MASK 0x00000003 #define SYSMGR_EMACGRP_CTRL_PHYSEL_MASK 0x00000003
#define SYSMGR_EMACGRP_CTRL_PTP_REF_CLK_MASK 0x00000010
#define EMAC_SPLITTER_CTRL_REG 0x0 #define EMAC_SPLITTER_CTRL_REG 0x0
#define EMAC_SPLITTER_CTRL_SPEED_MASK 0x3 #define EMAC_SPLITTER_CTRL_SPEED_MASK 0x3
...@@ -47,6 +48,7 @@ struct socfpga_dwmac { ...@@ -47,6 +48,7 @@ struct socfpga_dwmac {
struct regmap *sys_mgr_base_addr; struct regmap *sys_mgr_base_addr;
struct reset_control *stmmac_rst; struct reset_control *stmmac_rst;
void __iomem *splitter_base; void __iomem *splitter_base;
bool f2h_ptp_ref_clk;
}; };
static void socfpga_dwmac_fix_mac_speed(void *priv, unsigned int speed) static void socfpga_dwmac_fix_mac_speed(void *priv, unsigned int speed)
...@@ -116,6 +118,8 @@ static int socfpga_dwmac_parse_data(struct socfpga_dwmac *dwmac, struct device * ...@@ -116,6 +118,8 @@ static int socfpga_dwmac_parse_data(struct socfpga_dwmac *dwmac, struct device *
return -EINVAL; return -EINVAL;
} }
dwmac->f2h_ptp_ref_clk = of_property_read_bool(np, "altr,f2h_ptp_ref_clk");
np_splitter = of_parse_phandle(np, "altr,emac-splitter", 0); np_splitter = of_parse_phandle(np, "altr,emac-splitter", 0);
if (np_splitter) { if (np_splitter) {
if (of_address_to_resource(np_splitter, 0, &res_splitter)) { if (of_address_to_resource(np_splitter, 0, &res_splitter)) {
...@@ -171,6 +175,11 @@ static int socfpga_dwmac_setup(struct socfpga_dwmac *dwmac) ...@@ -171,6 +175,11 @@ static int socfpga_dwmac_setup(struct socfpga_dwmac *dwmac)
ctrl &= ~(SYSMGR_EMACGRP_CTRL_PHYSEL_MASK << reg_shift); ctrl &= ~(SYSMGR_EMACGRP_CTRL_PHYSEL_MASK << reg_shift);
ctrl |= val << reg_shift; ctrl |= val << reg_shift;
if (dwmac->f2h_ptp_ref_clk)
ctrl |= SYSMGR_EMACGRP_CTRL_PTP_REF_CLK_MASK << (reg_shift / 2);
else
ctrl &= ~(SYSMGR_EMACGRP_CTRL_PTP_REF_CLK_MASK << (reg_shift / 2));
regmap_write(sys_mgr_base_addr, reg_offset, ctrl); regmap_write(sys_mgr_base_addr, reg_offset, ctrl);
return 0; return 0;
} }
......
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