From: David Wu <david.wu@rock-chips.com>
To: davem@davemloft.net, heiko@sntech.de, robh+dt@kernel.org,
mark.rutland@arm.com, catalin.marinas@arm.com,
will.deacon@arm.com, olof@lixom.net, linux@armlinux.org.uk,
arnd@arndb.de
Cc: andrew@lunn.ch, f.fainelli@gmail.com, peppe.cavallaro@st.com,
alexandre.torgue@st.com, huangtao@rock-chips.com,
hwg@rock-chips.com, netdev@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, David Wu <david.wu@rock-chips.com>
Subject: [PATCH 07/11] net: stmmac: dwmac-rk: Add internal phy supprot for rk3328
Date: Fri, 23 Jun 2017 13:01:01 +0800 [thread overview]
Message-ID: <1498194061-8127-1-git-send-email-david.wu@rock-chips.com> (raw)
In-Reply-To: <1498192929-7519-1-git-send-email-david.wu@rock-chips.com>
There are two mac controllers in the rk3328, the one connects
to external phy, and the other one connects to internal phy.
Like the mac of external phy, the internal phy's mac also needs to
configure the related mac registers at GRF.
Signed-off-by: David Wu <david.wu@rock-chips.com>
---
drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 26 +++++++++++++++++++++++---
1 file changed, 23 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 90e1fc8..c4c58a2 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -323,6 +323,8 @@ static void rk3288_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
#define RK3328_GRF_MAC_CON0 0x0900
#define RK3328_GRF_MAC_CON1 0x0904
+#define RK3328_GRF_MAC_CON2 0x0908
+#define RK3328_GRF_MACPHY_CON1 0xb04
/* RK3328_GRF_MAC_CON0 */
#define RK3328_GMAC_CLK_RX_DL_CFG(val) HIWORD_UPDATE(val, 0x7F, 7)
@@ -349,6 +351,9 @@ static void rk3288_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
#define RK3328_GMAC_RXCLK_DLY_ENABLE GRF_BIT(1)
#define RK3328_GMAC_RXCLK_DLY_DISABLE GRF_CLR_BIT(0)
+/* RK3328_GRF_MACPHY_CON1 */
+#define RK3328_MACPHY_RMII_MODE GRF_BIT(9)
+
static void rk3328_set_to_rgmii(struct rk_priv_data *bsp_priv,
int tx_delay, int rx_delay)
{
@@ -373,13 +378,17 @@ static void rk3328_set_to_rgmii(struct rk_priv_data *bsp_priv,
static void rk3328_set_to_rmii(struct rk_priv_data *bsp_priv)
{
struct device *dev = &bsp_priv->pdev->dev;
+ unsigned int reg;
if (IS_ERR(bsp_priv->grf)) {
dev_err(dev, "Missing rockchip,grf property\n");
return;
}
- regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
+ reg = bsp_priv->internal_phy ? RK3328_GRF_MAC_CON2 :
+ RK3328_GRF_MAC_CON1;
+
+ regmap_write(bsp_priv->grf, reg,
RK3328_GMAC_PHY_INTF_SEL_RMII |
RK3328_GMAC_RMII_MODE);
}
@@ -409,29 +418,40 @@ static void rk3328_set_rgmii_speed(struct rk_priv_data *bsp_priv, int speed)
static void rk3328_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
{
struct device *dev = &bsp_priv->pdev->dev;
+ unsigned int reg;
if (IS_ERR(bsp_priv->grf)) {
dev_err(dev, "Missing rockchip,grf property\n");
return;
}
+ reg = bsp_priv->internal_phy ? RK3328_GRF_MAC_CON2 :
+ RK3328_GRF_MAC_CON1;
+
if (speed == 10)
- regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
+ regmap_write(bsp_priv->grf, reg,
RK3328_GMAC_RMII_CLK_2_5M |
RK3328_GMAC_SPEED_10M);
else if (speed == 100)
- regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
+ regmap_write(bsp_priv->grf, reg,
RK3328_GMAC_RMII_CLK_25M |
RK3328_GMAC_SPEED_100M);
else
dev_err(dev, "unknown speed value for RMII! speed=%d", speed);
}
+static void rk3328_internal_phy_powerup(struct rk_priv_data *priv)
+{
+ regmap_write(priv->grf, RK3328_GRF_MACPHY_CON1,
+ RK3328_MACPHY_RMII_MODE);
+}
+
static const struct rk_gmac_ops rk3328_ops = {
.set_to_rgmii = rk3328_set_to_rgmii,
.set_to_rmii = rk3328_set_to_rmii,
.set_rgmii_speed = rk3328_set_rgmii_speed,
.set_rmii_speed = rk3328_set_rmii_speed,
+ .internal_phy_powerup = rk3328_internal_phy_powerup,
};
#define RK3366_GRF_SOC_CON6 0x0418
--
1.9.1
WARNING: multiple messages have this Message-ID (diff)
From: David Wu <david.wu-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
To: davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org,
heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
mark.rutland-5wv7dgnIgG8@public.gmane.org,
catalin.marinas-5wv7dgnIgG8@public.gmane.org,
will.deacon-5wv7dgnIgG8@public.gmane.org,
olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org,
linux-I+IVW8TIWO2tmTQ+vhA3Yw@public.gmane.org,
arnd-r2nGTMty4D4@public.gmane.org
Cc: andrew-g2DYL2Zd6BY@public.gmane.org,
f.fainelli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
peppe.cavallaro-qxv4g6HH51o@public.gmane.org,
alexandre.torgue-qxv4g6HH51o@public.gmane.org,
huangtao-TNX95d0MmH7DzftRWevZcw@public.gmane.org,
hwg-TNX95d0MmH7DzftRWevZcw@public.gmane.org,
netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
David Wu <david.wu-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
Subject: [PATCH 07/11] net: stmmac: dwmac-rk: Add internal phy supprot for rk3328
Date: Fri, 23 Jun 2017 13:01:01 +0800 [thread overview]
Message-ID: <1498194061-8127-1-git-send-email-david.wu@rock-chips.com> (raw)
In-Reply-To: <1498192929-7519-1-git-send-email-david.wu-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
There are two mac controllers in the rk3328, the one connects
to external phy, and the other one connects to internal phy.
Like the mac of external phy, the internal phy's mac also needs to
configure the related mac registers at GRF.
Signed-off-by: David Wu <david.wu-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
---
drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 26 +++++++++++++++++++++++---
1 file changed, 23 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 90e1fc8..c4c58a2 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -323,6 +323,8 @@ static void rk3288_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
#define RK3328_GRF_MAC_CON0 0x0900
#define RK3328_GRF_MAC_CON1 0x0904
+#define RK3328_GRF_MAC_CON2 0x0908
+#define RK3328_GRF_MACPHY_CON1 0xb04
/* RK3328_GRF_MAC_CON0 */
#define RK3328_GMAC_CLK_RX_DL_CFG(val) HIWORD_UPDATE(val, 0x7F, 7)
@@ -349,6 +351,9 @@ static void rk3288_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
#define RK3328_GMAC_RXCLK_DLY_ENABLE GRF_BIT(1)
#define RK3328_GMAC_RXCLK_DLY_DISABLE GRF_CLR_BIT(0)
+/* RK3328_GRF_MACPHY_CON1 */
+#define RK3328_MACPHY_RMII_MODE GRF_BIT(9)
+
static void rk3328_set_to_rgmii(struct rk_priv_data *bsp_priv,
int tx_delay, int rx_delay)
{
@@ -373,13 +378,17 @@ static void rk3328_set_to_rgmii(struct rk_priv_data *bsp_priv,
static void rk3328_set_to_rmii(struct rk_priv_data *bsp_priv)
{
struct device *dev = &bsp_priv->pdev->dev;
+ unsigned int reg;
if (IS_ERR(bsp_priv->grf)) {
dev_err(dev, "Missing rockchip,grf property\n");
return;
}
- regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
+ reg = bsp_priv->internal_phy ? RK3328_GRF_MAC_CON2 :
+ RK3328_GRF_MAC_CON1;
+
+ regmap_write(bsp_priv->grf, reg,
RK3328_GMAC_PHY_INTF_SEL_RMII |
RK3328_GMAC_RMII_MODE);
}
@@ -409,29 +418,40 @@ static void rk3328_set_rgmii_speed(struct rk_priv_data *bsp_priv, int speed)
static void rk3328_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
{
struct device *dev = &bsp_priv->pdev->dev;
+ unsigned int reg;
if (IS_ERR(bsp_priv->grf)) {
dev_err(dev, "Missing rockchip,grf property\n");
return;
}
+ reg = bsp_priv->internal_phy ? RK3328_GRF_MAC_CON2 :
+ RK3328_GRF_MAC_CON1;
+
if (speed == 10)
- regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
+ regmap_write(bsp_priv->grf, reg,
RK3328_GMAC_RMII_CLK_2_5M |
RK3328_GMAC_SPEED_10M);
else if (speed == 100)
- regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
+ regmap_write(bsp_priv->grf, reg,
RK3328_GMAC_RMII_CLK_25M |
RK3328_GMAC_SPEED_100M);
else
dev_err(dev, "unknown speed value for RMII! speed=%d", speed);
}
+static void rk3328_internal_phy_powerup(struct rk_priv_data *priv)
+{
+ regmap_write(priv->grf, RK3328_GRF_MACPHY_CON1,
+ RK3328_MACPHY_RMII_MODE);
+}
+
static const struct rk_gmac_ops rk3328_ops = {
.set_to_rgmii = rk3328_set_to_rgmii,
.set_to_rmii = rk3328_set_to_rmii,
.set_rgmii_speed = rk3328_set_rgmii_speed,
.set_rmii_speed = rk3328_set_rmii_speed,
+ .internal_phy_powerup = rk3328_internal_phy_powerup,
};
#define RK3366_GRF_SOC_CON6 0x0418
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
WARNING: multiple messages have this Message-ID (diff)
From: david.wu@rock-chips.com (David Wu)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 07/11] net: stmmac: dwmac-rk: Add internal phy supprot for rk3328
Date: Fri, 23 Jun 2017 13:01:01 +0800 [thread overview]
Message-ID: <1498194061-8127-1-git-send-email-david.wu@rock-chips.com> (raw)
In-Reply-To: <1498192929-7519-1-git-send-email-david.wu@rock-chips.com>
There are two mac controllers in the rk3328, the one connects
to external phy, and the other one connects to internal phy.
Like the mac of external phy, the internal phy's mac also needs to
configure the related mac registers at GRF.
Signed-off-by: David Wu <david.wu@rock-chips.com>
---
drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 26 +++++++++++++++++++++++---
1 file changed, 23 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 90e1fc8..c4c58a2 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -323,6 +323,8 @@ static void rk3288_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
#define RK3328_GRF_MAC_CON0 0x0900
#define RK3328_GRF_MAC_CON1 0x0904
+#define RK3328_GRF_MAC_CON2 0x0908
+#define RK3328_GRF_MACPHY_CON1 0xb04
/* RK3328_GRF_MAC_CON0 */
#define RK3328_GMAC_CLK_RX_DL_CFG(val) HIWORD_UPDATE(val, 0x7F, 7)
@@ -349,6 +351,9 @@ static void rk3288_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
#define RK3328_GMAC_RXCLK_DLY_ENABLE GRF_BIT(1)
#define RK3328_GMAC_RXCLK_DLY_DISABLE GRF_CLR_BIT(0)
+/* RK3328_GRF_MACPHY_CON1 */
+#define RK3328_MACPHY_RMII_MODE GRF_BIT(9)
+
static void rk3328_set_to_rgmii(struct rk_priv_data *bsp_priv,
int tx_delay, int rx_delay)
{
@@ -373,13 +378,17 @@ static void rk3328_set_to_rgmii(struct rk_priv_data *bsp_priv,
static void rk3328_set_to_rmii(struct rk_priv_data *bsp_priv)
{
struct device *dev = &bsp_priv->pdev->dev;
+ unsigned int reg;
if (IS_ERR(bsp_priv->grf)) {
dev_err(dev, "Missing rockchip,grf property\n");
return;
}
- regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
+ reg = bsp_priv->internal_phy ? RK3328_GRF_MAC_CON2 :
+ RK3328_GRF_MAC_CON1;
+
+ regmap_write(bsp_priv->grf, reg,
RK3328_GMAC_PHY_INTF_SEL_RMII |
RK3328_GMAC_RMII_MODE);
}
@@ -409,29 +418,40 @@ static void rk3328_set_rgmii_speed(struct rk_priv_data *bsp_priv, int speed)
static void rk3328_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
{
struct device *dev = &bsp_priv->pdev->dev;
+ unsigned int reg;
if (IS_ERR(bsp_priv->grf)) {
dev_err(dev, "Missing rockchip,grf property\n");
return;
}
+ reg = bsp_priv->internal_phy ? RK3328_GRF_MAC_CON2 :
+ RK3328_GRF_MAC_CON1;
+
if (speed == 10)
- regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
+ regmap_write(bsp_priv->grf, reg,
RK3328_GMAC_RMII_CLK_2_5M |
RK3328_GMAC_SPEED_10M);
else if (speed == 100)
- regmap_write(bsp_priv->grf, RK3328_GRF_MAC_CON1,
+ regmap_write(bsp_priv->grf, reg,
RK3328_GMAC_RMII_CLK_25M |
RK3328_GMAC_SPEED_100M);
else
dev_err(dev, "unknown speed value for RMII! speed=%d", speed);
}
+static void rk3328_internal_phy_powerup(struct rk_priv_data *priv)
+{
+ regmap_write(priv->grf, RK3328_GRF_MACPHY_CON1,
+ RK3328_MACPHY_RMII_MODE);
+}
+
static const struct rk_gmac_ops rk3328_ops = {
.set_to_rgmii = rk3328_set_to_rgmii,
.set_to_rmii = rk3328_set_to_rmii,
.set_rgmii_speed = rk3328_set_rgmii_speed,
.set_rmii_speed = rk3328_set_rmii_speed,
+ .internal_phy_powerup = rk3328_internal_phy_powerup,
};
#define RK3366_GRF_SOC_CON6 0x0418
--
1.9.1
next prev parent reply other threads:[~2017-06-23 4:57 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-23 4:41 [PATCH 00/11] Add the mac internal ephy support David Wu
2017-06-23 4:41 ` David Wu
2017-06-23 4:41 ` David Wu
2017-06-23 4:41 ` [PATCH 01/11] net: phy: Add rockchip phy driver support David Wu
2017-06-23 4:41 ` David Wu
2017-06-23 13:55 ` Andrew Lunn
2017-06-23 13:55 ` Andrew Lunn
2017-06-23 16:18 ` Florian Fainelli
2017-06-23 16:18 ` Florian Fainelli
2017-06-24 2:10 ` Andrew Lunn
2017-06-24 2:10 ` Andrew Lunn
2017-06-24 2:19 ` Andrew Lunn
2017-06-24 2:19 ` Andrew Lunn
2017-06-24 2:19 ` Andrew Lunn
2017-06-24 8:38 ` Heiko Stuebner
2017-06-24 8:38 ` Heiko Stuebner
2017-06-24 8:38 ` Heiko Stuebner
2017-06-24 14:04 ` Andrew Lunn
2017-06-24 14:04 ` Andrew Lunn
2017-06-24 14:04 ` Andrew Lunn
2017-06-24 16:05 ` Heiko Stuebner
2017-06-24 16:05 ` Heiko Stuebner
2017-06-24 16:05 ` Heiko Stuebner
2017-06-27 14:44 ` David.Wu
2017-06-27 14:44 ` David.Wu
2017-06-27 14:46 ` Andrew Lunn
2017-06-27 14:46 ` Andrew Lunn
2017-06-27 15:07 ` David.Wu
2017-06-27 15:07 ` David.Wu
2017-06-23 4:42 ` [PATCH 02/11] multi_v7_defconfig: Make rockchip mac phy built-in David Wu
2017-06-23 4:42 ` David Wu
2017-06-23 4:42 ` [PATCH 03/11] arm64: defconfig: Enable CONFIG_ROCKCHIP_MAC_PHY David Wu
2017-06-23 4:42 ` David Wu
2017-06-23 4:42 ` [PATCH 04/11] net: stmmac: dwmac-rk: Remove unwanted code for rk3328_set_to_rmii() David Wu
2017-06-23 4:42 ` David Wu
2017-06-23 4:42 ` David Wu
2017-06-24 2:22 ` Andrew Lunn
2017-06-24 2:22 ` Andrew Lunn
2017-06-24 2:22 ` Andrew Lunn
2017-06-23 4:59 ` [PATCH 05/11] net: stmmac: dwmac-rk: Add internal phy support David Wu
2017-06-23 4:59 ` David Wu
2017-06-23 4:59 ` David Wu
2017-06-23 16:22 ` Florian Fainelli
2017-06-23 16:22 ` Florian Fainelli
2017-06-23 16:22 ` Florian Fainelli
2017-06-27 14:21 ` David.Wu
2017-06-27 14:52 ` Andrew Lunn
2017-06-27 14:52 ` Andrew Lunn
2017-06-23 17:19 ` Heiko Stuebner
2017-06-23 17:19 ` Heiko Stuebner
2017-06-27 14:33 ` David.Wu
2017-06-27 14:33 ` David.Wu
2017-06-27 14:33 ` David.Wu
2017-06-27 15:40 ` Heiko Stuebner
2017-06-27 15:40 ` Heiko Stuebner
2017-06-27 15:40 ` Heiko Stuebner
2017-06-24 2:29 ` Andrew Lunn
2017-06-24 2:29 ` Andrew Lunn
2017-06-24 2:29 ` Andrew Lunn
2017-07-27 12:44 ` David.Wu
2017-07-27 12:44 ` David.Wu
2017-06-23 4:59 ` [PATCH 06/11] net: stmmac: dwmac-rk: Add internal phy support for rk3228 David Wu
2017-06-23 4:59 ` David Wu
2017-06-23 4:59 ` David Wu
2017-06-23 5:01 ` David Wu [this message]
2017-06-23 5:01 ` [PATCH 07/11] net: stmmac: dwmac-rk: Add internal phy supprot for rk3328 David Wu
2017-06-23 5:01 ` David Wu
2017-06-23 5:02 ` [PATCH 08/11] ARM: dts: rk322x: Add support internal phy for gmac David Wu
2017-06-23 5:02 ` David Wu
2017-06-23 5:02 ` [PATCH 09/11] ARM: dts: rk3228-evb: Enable the " David Wu
2017-06-23 5:02 ` David Wu
2017-06-23 5:02 ` David Wu
2017-06-23 5:03 ` [PATCH 10/11] ARM64: dts: rockchip: Add gmac2phy node support for rk3328 David Wu
2017-06-23 5:03 ` David Wu
2017-06-23 5:04 ` [PATCH 11/11] ARM64: dts: rockchip: Enable gmac2phy for rk3328-evb David Wu
2017-06-23 5:04 ` David Wu
2017-06-23 5:04 ` David Wu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1498194061-8127-1-git-send-email-david.wu@rock-chips.com \
--to=david.wu@rock-chips.com \
--cc=alexandre.torgue@st.com \
--cc=andrew@lunn.ch \
--cc=arnd@arndb.de \
--cc=catalin.marinas@arm.com \
--cc=davem@davemloft.net \
--cc=devicetree@vger.kernel.org \
--cc=f.fainelli@gmail.com \
--cc=heiko@sntech.de \
--cc=huangtao@rock-chips.com \
--cc=hwg@rock-chips.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rockchip@lists.infradead.org \
--cc=linux@armlinux.org.uk \
--cc=mark.rutland@arm.com \
--cc=netdev@vger.kernel.org \
--cc=olof@lixom.net \
--cc=peppe.cavallaro@st.com \
--cc=robh+dt@kernel.org \
--cc=will.deacon@arm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.