--- /dev/null
+From 1cb94db3d1bfe0075bde78fb2989f17e0a8a3936 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Wed, 17 Aug 2016 23:00:30 +0200
+Subject: [PATCH] net: bgmac: support Ethernet core on BCM53573 SoCs
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+BCM53573 is a new series of Broadcom's SoCs. It's based on ARM and can
+be found in two packages (versions): BCM53573 and BCM47189. It shares
+some code with the Northstar family, but also requires some new quirks.
+
+First of all there can be up to 2 Ethernet cores on this SoC. If that is
+the case, they are connected to two different switch ports allowing some
+more complex/optimized setups. It seems the second unit doesn't come
+fully configured and requires some IRQ quirk.
+
+Other than that only the first core is connected to the PHY. For the
+second one we have to register fixed PHY (similarly to the Northstar),
+otherwise generic PHY driver would get some invalid info.
+
+This has been successfully tested on Tenda AC9 (BCM47189B0).
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/ethernet/broadcom/bgmac-bcma.c | 19 ++++++++++++++++++-
+ drivers/net/ethernet/broadcom/bgmac.c | 25 +++++++++++++++++++++++++
+ drivers/net/ethernet/broadcom/bgmac.h | 19 +++++++++++++++++++
+ include/linux/bcma/bcma.h | 3 +++
+ include/linux/bcma/bcma_regs.h | 1 +
+ 5 files changed, 66 insertions(+), 1 deletion(-)
+
+--- a/drivers/net/ethernet/broadcom/bgmac-bcma.c
++++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c
+@@ -92,6 +92,7 @@ MODULE_DEVICE_TABLE(bcma, bgmac_bcma_tbl
+ /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipattach */
+ static int bgmac_probe(struct bcma_device *core)
+ {
++ struct bcma_chipinfo *ci = &core->bus->chipinfo;
+ struct ssb_sprom *sprom = &core->bus->sprom;
+ struct mii_bus *mii_bus;
+ struct bgmac *bgmac;
+@@ -157,7 +158,8 @@ static int bgmac_probe(struct bcma_devic
+ dev_info(bgmac->dev, "Found PHY addr: %d%s\n", bgmac->phyaddr,
+ bgmac->phyaddr == BGMAC_PHY_NOREGS ? " (NOREGS)" : "");
+
+- if (!bgmac_is_bcm4707_family(core)) {
++ if (!bgmac_is_bcm4707_family(core) &&
++ !(ci->id == BCMA_CHIP_ID_BCM53573 && core->core_unit == 1)) {
+ mii_bus = bcma_mdio_mii_register(core, bgmac->phyaddr);
+ if (IS_ERR(mii_bus)) {
+ err = PTR_ERR(mii_bus);
+@@ -230,6 +232,21 @@ static int bgmac_probe(struct bcma_devic
+ bgmac->feature_flags |= BGMAC_FEAT_NO_RESET;
+ bgmac->feature_flags |= BGMAC_FEAT_FORCE_SPEED_2500;
+ break;
++ case BCMA_CHIP_ID_BCM53573:
++ bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
++ bgmac->feature_flags |= BGMAC_FEAT_SET_RXQ_CLK;
++ if (ci->pkg == BCMA_PKG_ID_BCM47189)
++ bgmac->feature_flags |= BGMAC_FEAT_IOST_ATTACHED;
++ if (core->core_unit == 0) {
++ bgmac->feature_flags |= BGMAC_FEAT_CC4_IF_SW_TYPE;
++ if (ci->pkg == BCMA_PKG_ID_BCM47189)
++ bgmac->feature_flags |=
++ BGMAC_FEAT_CC4_IF_SW_TYPE_RGMII;
++ } else if (core->core_unit == 1) {
++ bgmac->feature_flags |= BGMAC_FEAT_IRQ_ID_OOB_6;
++ bgmac->feature_flags |= BGMAC_FEAT_CC7_IF_TYPE_RGMII;
++ }
++ break;
+ default:
+ bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
+ bgmac->feature_flags |= BGMAC_FEAT_SET_RXQ_CLK;
+--- a/drivers/net/ethernet/broadcom/bgmac.c
++++ b/drivers/net/ethernet/broadcom/bgmac.c
+@@ -943,6 +943,27 @@ static void bgmac_chip_reset(struct bgma
+ bgmac_cco_ctl_maskset(bgmac, 1, ~(BGMAC_CHIPCTL_1_IF_TYPE_MASK |
+ BGMAC_CHIPCTL_1_SW_TYPE_MASK),
+ sw_type);
++ } else if (bgmac->feature_flags & BGMAC_FEAT_CC4_IF_SW_TYPE) {
++ u32 sw_type = BGMAC_CHIPCTL_4_IF_TYPE_MII |
++ BGMAC_CHIPCTL_4_SW_TYPE_EPHY;
++ u8 et_swtype = 0;
++ char buf[4];
++
++ if (bcm47xx_nvram_getenv("et_swtype", buf, sizeof(buf)) > 0) {
++ if (kstrtou8(buf, 0, &et_swtype))
++ dev_err(bgmac->dev, "Failed to parse et_swtype (%s)\n",
++ buf);
++ sw_type = (et_swtype & 0x0f) << 12;
++ } else if (bgmac->feature_flags & BGMAC_FEAT_CC4_IF_SW_TYPE_RGMII) {
++ sw_type = BGMAC_CHIPCTL_4_IF_TYPE_RGMII |
++ BGMAC_CHIPCTL_4_SW_TYPE_RGMII;
++ }
++ bgmac_cco_ctl_maskset(bgmac, 4, ~(BGMAC_CHIPCTL_4_IF_TYPE_MASK |
++ BGMAC_CHIPCTL_4_SW_TYPE_MASK),
++ sw_type);
++ } else if (bgmac->feature_flags & BGMAC_FEAT_CC7_IF_TYPE_RGMII) {
++ bgmac_cco_ctl_maskset(bgmac, 7, ~BGMAC_CHIPCTL_7_IF_TYPE_MASK,
++ BGMAC_CHIPCTL_7_IF_TYPE_RGMII);
+ }
+
+ if (iost & BGMAC_BCMA_IOST_ATTACHED && !bgmac->has_robosw)
+@@ -1486,6 +1507,10 @@ int bgmac_enet_probe(struct bgmac *info)
+ */
+ bgmac_clk_enable(bgmac, 0);
+
++ /* This seems to be fixing IRQ by assigning OOB #6 to the core */
++ if (bgmac->feature_flags & BGMAC_FEAT_IRQ_ID_OOB_6)
++ bgmac_idm_write(bgmac, BCMA_OOB_SEL_OUT_A30, 0x86);
++
+ bgmac_chip_reset(bgmac);
+
+ err = bgmac_dma_alloc(bgmac);
+--- a/drivers/net/ethernet/broadcom/bgmac.h
++++ b/drivers/net/ethernet/broadcom/bgmac.h
+@@ -369,6 +369,21 @@
+ #define BGMAC_CHIPCTL_1_SW_TYPE_RGMII 0x000000C0
+ #define BGMAC_CHIPCTL_1_RXC_DLL_BYPASS 0x00010000
+
++#define BGMAC_CHIPCTL_4_IF_TYPE_MASK 0x00003000
++#define BGMAC_CHIPCTL_4_IF_TYPE_RMII 0x00000000
++#define BGMAC_CHIPCTL_4_IF_TYPE_MII 0x00001000
++#define BGMAC_CHIPCTL_4_IF_TYPE_RGMII 0x00002000
++#define BGMAC_CHIPCTL_4_SW_TYPE_MASK 0x0000C000
++#define BGMAC_CHIPCTL_4_SW_TYPE_EPHY 0x00000000
++#define BGMAC_CHIPCTL_4_SW_TYPE_EPHYMII 0x00004000
++#define BGMAC_CHIPCTL_4_SW_TYPE_EPHYRMII 0x00008000
++#define BGMAC_CHIPCTL_4_SW_TYPE_RGMII 0x0000C000
++
++#define BGMAC_CHIPCTL_7_IF_TYPE_MASK 0x000000C0
++#define BGMAC_CHIPCTL_7_IF_TYPE_RMII 0x00000000
++#define BGMAC_CHIPCTL_7_IF_TYPE_MII 0x00000040
++#define BGMAC_CHIPCTL_7_IF_TYPE_RGMII 0x00000080
++
+ #define BGMAC_WEIGHT 64
+
+ #define ETHER_MAX_LEN 1518
+@@ -390,6 +405,10 @@
+ #define BGMAC_FEAT_NO_CLR_MIB BIT(13)
+ #define BGMAC_FEAT_FORCE_SPEED_2500 BIT(14)
+ #define BGMAC_FEAT_CMDCFG_SR_REV4 BIT(15)
++#define BGMAC_FEAT_IRQ_ID_OOB_6 BIT(16)
++#define BGMAC_FEAT_CC4_IF_SW_TYPE BIT(17)
++#define BGMAC_FEAT_CC4_IF_SW_TYPE_RGMII BIT(18)
++#define BGMAC_FEAT_CC7_IF_TYPE_RGMII BIT(19)
+
+ struct bgmac_slot_info {
+ union {
+--- a/include/linux/bcma/bcma_regs.h
++++ b/include/linux/bcma/bcma_regs.h
+@@ -23,6 +23,7 @@
+ #define BCMA_CLKCTLST_4328A0_HAVEALP 0x00020000 /* 4328a0 has reversed bits */
+
+ /* Agent registers (common for every core) */
++#define BCMA_OOB_SEL_OUT_A30 0x0100
+ #define BCMA_IOCTL 0x0408 /* IO control */
+ #define BCMA_IOCTL_CLK 0x0001
+ #define BCMA_IOCTL_FGC 0x0002
projects / openwrt / staging / dedeckeh.git / blobdiff