This is a driver for AX88796C Ethernet Adapter connected in SPI mode as
found on ARTIK5 evaluation board. The driver has been ported from a
v3.10.9 vendor kernel for ARTIK5 board.
Changes in v5:
- coding style (local variable declarations)
- added spi0 node in the DT binding example and removed
interrupt-parent
- removed comp module parameter
- added CONFIG_SPI_AX88796C_COMPRESSION option to set the initial
state of SPI compression
- introduced new ethtool tunable "spi-compression" to controll SPI
transfer compression
- removed unused fields in struct ax88796c_device
- switched from using buffers allocated on stack for SPI transfers
to DMA safe ones embedded in struct ax_spi and allocated with
kmalloc()
Changes in v4:
- fixed compilation problems in asix,ax88796c.yaml and in
ax88796c_main.c introduced in v3
Changes in v3:
- modify vendor-prefixes.yaml in a separate patch
- fix several problems in the dt binding
- removed unnecessary descriptions and properties
- changed the order of entries
- fixed problems with missing defines in the example
- change (1 << N) to BIT(N), left a few (0 << N)
- replace ax88796c_get_link(), ax88796c_get_link_ksettings(),
ax88796c_set_link_ksettings(), ax88796c_nway_reset(),
ax88796c_set_mac_address() with appropriate kernel functions.
- disable PHY auto-polling in MAC and use PHYLIB to track the state
of PHY and configure MAC
- propagate return values instead of returning constants in several
places
- add WARN_ON() for unlocked mutex
- remove local work queue and use the system_wq
- replace phy_connect_direct() with phy_connect() and move
devm_register_netdev() to the end of ax88796c_probe()
(Unlike phy_connect_direct() phy_connect() does not crash if the
network device isn't registered yet.)
- remove error messages on ENOMEM
- move free_irq() to the end of ax88796c_close() to avoid race
condition
- implement flow-control
Changes in v2:
- use phylib
- added DT bindings
- moved #includes to *.c files
- used mutex instead of a semaphore for locking
- renamed some constants
- added error propagation for several functions
- used ethtool for dumping registers
- added control over checksum offloading
- remove vendor specific PM
- removed macaddr module parameter and added support for reading a MAC
address from platform data (e.g. DT)
- removed dependency on SPI from NET_VENDOR_ASIX
- added an entry in the MAINTAINERS file
- simplified logging with appropriate netif_* and netdev_* helpers
- lots of style fixes
Łukasz Stelmach (5):
dt-bindings: vendor-prefixes: Add asix prefix
dt-bindings: net: Add bindings for AX88796C SPI Ethernet Adapter
net: ax88796c: ASIX AX88796C SPI Ethernet Adapter Driver
ARM: dts: exynos: Add Ethernet to Artik 5 board
ARM: defconfig: Enable ax88796c driver
.../bindings/net/asix,ax88796c.yaml | 73 ++
.../devicetree/bindings/vendor-prefixes.yaml | 2 +
MAINTAINERS | 6 +
arch/arm/boot/dts/exynos3250-artik5-eval.dts | 29 +
arch/arm/configs/exynos_defconfig | 2 +
arch/arm/configs/multi_v7_defconfig | 2 +
drivers/net/ethernet/Kconfig | 1 +
drivers/net/ethernet/Makefile | 1 +
drivers/net/ethernet/asix/Kconfig | 35 +
drivers/net/ethernet/asix/Makefile | 6 +
drivers/net/ethernet/asix/ax88796c_ioctl.c | 235 ++++
drivers/net/ethernet/asix/ax88796c_ioctl.h | 26 +
drivers/net/ethernet/asix/ax88796c_main.c | 1132 +++++++++++++++++
drivers/net/ethernet/asix/ax88796c_main.h | 561 ++++++++
drivers/net/ethernet/asix/ax88796c_spi.c | 109 ++
drivers/net/ethernet/asix/ax88796c_spi.h | 70 +
include/uapi/linux/ethtool.h | 1 +
net/ethtool/common.c | 1 +
18 files changed, 2292 insertions(+)
create mode 100644 Documentation/devicetree/bindings/net/asix,ax88796c.yaml
create mode 100644 drivers/net/ethernet/asix/Kconfig
create mode 100644 drivers/net/ethernet/asix/Makefile
create mode 100644 drivers/net/ethernet/asix/ax88796c_ioctl.c
create mode 100644 drivers/net/ethernet/asix/ax88796c_ioctl.h
create mode 100644 drivers/net/ethernet/asix/ax88796c_main.c
create mode 100644 drivers/net/ethernet/asix/ax88796c_main.h
create mode 100644 drivers/net/ethernet/asix/ax88796c_spi.c
create mode 100644 drivers/net/ethernet/asix/ax88796c_spi.h
--
2.26.2
Add the prefix for ASIX Electronics Corporation.
Signed-off-by: Łukasz Stelmach <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Acked-by: Rob Herring <[email protected]>
---
Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index 2735be1a8470..ce3b3f6c9728 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -117,6 +117,8 @@ patternProperties:
description: Asahi Kasei Corp.
"^asc,.*":
description: All Sensors Corporation
+ "^asix,.*":
+ description: ASIX Electronics Corporation
"^aspeed,.*":
description: ASPEED Technology Inc.
"^asus,.*":
--
2.26.2
Add node for ax88796c ethernet chip.
Signed-off-by: Łukasz Stelmach <[email protected]>
---
arch/arm/boot/dts/exynos3250-artik5-eval.dts | 29 ++++++++++++++++++++
1 file changed, 29 insertions(+)
diff --git a/arch/arm/boot/dts/exynos3250-artik5-eval.dts b/arch/arm/boot/dts/exynos3250-artik5-eval.dts
index 20446a846a98..a91e09a7d3fa 100644
--- a/arch/arm/boot/dts/exynos3250-artik5-eval.dts
+++ b/arch/arm/boot/dts/exynos3250-artik5-eval.dts
@@ -37,3 +37,32 @@ &mshc_2 {
&serial_2 {
status = "okay";
};
+
+&spi_0 {
+ status = "okay";
+ cs-gpios = <&gpx3 4 GPIO_ACTIVE_LOW>, <0>;
+
+ assigned-clocks = <&cmu CLK_MOUT_MPLL>, <&cmu CLK_DIV_MPLL_PRE>,
+ <&cmu CLK_MOUT_SPI0>, <&cmu CLK_DIV_SPI0>,
+ <&cmu CLK_DIV_SPI0_PRE>, <&cmu CLK_SCLK_SPI0>;
+ assigned-clock-parents =
+ <&cmu CLK_FOUT_MPLL>, /* for: CLK_MOUT_MPLL */
+ <&cmu CLK_MOUT_MPLL>, /* for: CLK_DIV_MPLL_PRE */
+ <&cmu CLK_DIV_MPLL_PRE>, /* for: CLK_MOUT_SPI0 */
+ <&cmu CLK_MOUT_SPI0>, /* for: CLK_DIV_SPI0 */
+ <&cmu CLK_DIV_SPI0>, /* for: CLK_DIV_SPI0_PRE */
+ <&cmu CLK_DIV_SPI0_PRE>; /* for: CLK_SCLK_SPI0 */
+
+ ethernet@0 {
+ compatible = "asix,ax88796c";
+ reg = <0x0>;
+ local-mac-address = [00 00 00 00 00 00]; /* Filled in by a boot-loader */
+ interrupt-parent = <&gpx2>;
+ interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+ spi-max-frequency = <40000000>;
+ reset-gpios = <&gpe0 2 GPIO_ACTIVE_LOW>;
+ controller-data {
+ samsung,spi-feedback-delay = <2>;
+ };
+ };
+};
--
2.26.2
On Tue, Nov 03, 2020 at 04:15:35PM +0100, Łukasz Stelmach wrote:
> Add node for ax88796c ethernet chip.
>
> Signed-off-by: Łukasz Stelmach <[email protected]>
> ---
> arch/arm/boot/dts/exynos3250-artik5-eval.dts | 29 ++++++++++++++++++++
> 1 file changed, 29 insertions(+)
Thanks, applied.
Best regards,
Krzysztof