linux-kernel - [PATCH v2 3/3] trafgen: Document sysfs entries

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Date:   Mon,  9 Dec 2019 11:41:28 +0530
From:   shubhrajyoti.datta@...il.com
To:     linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
        devicetree@...r.kernel.org
Cc:     gregkh@...uxfoundation.org, arnd@...db.de, michal.simek@...inx.com,
        robh+dt@...nel.org, shubhrajyoti.datta@...il.com,
        Kedareswara rao Appana <appana.durga.rao@...inx.com>,
        Kedareswara rao Appana <appanad@...inx.com>,
        Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
Subject: [PATCH v2 3/3] trafgen: Document sysfs entries

From: Kedareswara rao Appana <appana.durga.rao@...inx.com>

This patch adds the documentaion for the sysfs entries in the driver.

Signed-off-by: Kedareswara rao Appana <appanad@...inx.com>
Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
---
 Documentation/misc-devices/xilinx_trafgen.txt | 97 +++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 Documentation/misc-devices/xilinx_trafgen.txt

diff --git a/Documentation/misc-devices/xilinx_trafgen.txt b/Documentation/misc-devices/xilinx_trafgen.txt
new file mode 100644
index 0000000..dadcdad
--- /dev/null
+++ b/Documentation/misc-devices/xilinx_trafgen.txt
@@ -0,0 +1,97 @@
+Kernel driver xilinx_trafgen
+============================
+
+Supported chips:
+Zynq SOC, Xilinx 7 series fpga's (Virtex,Kintex,Artix)
+
+Data Sheet:
+	http://www.xilinx.com/support/documentation/ip_documentation/axi_traffic_gen/v2_0/pg125-axi-traffic-gen.pdf
+
+Author:
+        Kedareswara Rao Appana <appanad@...inx.com>
+
+Description
+-----------
+
+AXI Traffic Generator IP is a core that stresses the AXI4 interconnect and other
+AXI4 peripherals in the system. It generates a wide variety of AXI4 transactions
+based on the core programming.
+
+Features:
+---> Configurable option to generate and accept data according to different
+traffic profiles.
+---> Supports dependent/independent transaction between read/write master port
+with configurable delays.
+---> Programmable repeat count for each transaction with
+constant/increment/random address.
+---> External start/stop to generate traffic without processor intervention.
+---> Generates IP-specific traffic on AXI interface for pre-defined protocols.
+
+SYSFS:
+
+id
+	RO - shows the trafgen id.
+
+resource
+	RO - shows the baseaddress for the trafgen.
+
+master_start_stop
+	RW - monitors the master start logic.
+
+config_slave_status
+	RW - configure and monitors the slave status.
+
+err_sts
+	RW - get the error statistics/clear the errors.
+
+err_en
+	WO - enable the errors.
+
+intr_en
+	WO - enable the interrupts.
+
+last_valid_index
+	RW - gets the last valid index value.
+
+config_sts_show
+	RO - show the config status value.
+
+mram_clear
+	WO - clears the master ram.
+
+cram_clear
+	WO - clears the command ram.
+
+pram_clear
+	WO - clears the parameter ram.
+
+static_enable
+	RO - enables the static mode.
+
+static_burst_len
+	RW - gets/sets the static burst length.
+
+static_transferdone
+	RW - monitors the static transfer done status.
+
+reset_static_transferdone
+	RO - resets the static transferdone bit.
+
+stream_cfg
+	RW - sets the stream configuration parameters like delay.
+
+stream_tktsn
+	RW - TSTRB/TKEEP value for the last beat of the
+transfer set n. N can be 1 to 4.
+
+stream_enable
+	RO - enables the streaming mode.
+
+stream_transferlen
+	RW - get/set the streaming mode transfer length.
+
+stream_transfercnt
+	RW - get/set the streaming mode transfer count.
+
+loop_enable
+	RW - get/set loop enable value.
-- 
2.1.1