From: Vignesh Raghavendra <vigneshr@ti.com>
To: Vignesh Raghavendra <vigneshr@ti.com>,
David Woodhouse <dwmw2@infradead.org>,
Brian Norris <computersforpeace@gmail.com>,
Boris Brezillon <bbrezillon@kernel.org>,
Marek Vasut <marek.vasut@gmail.com>,
Richard Weinberger <richard@nod.at>,
Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org,
Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>,
Tudor Ambarus <Tudor.Ambarus@microchip.com>,
linux-kernel@vger.kernel.org,
Joakim Tjernlund <Joakim.Tjernlund@infinera.com>,
linux-mtd@lists.infradead.org,
Miquel Raynal <miquel.raynal@bootlin.com>,
Mason Yang <masonccyang@mxic.com.tw>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v6 4/5] dt-bindings: mtd: Add bindings for TI's AM654 HyperBus memory controller
Date: Tue, 18 Jun 2019 14:59:00 +0530 [thread overview]
Message-ID: <20190618092901.31764-5-vigneshr@ti.com> (raw)
In-Reply-To: <20190618092901.31764-1-vigneshr@ti.com>
Add binding documentation for TI's HyperBus memory controller present on
AM654 SoC.
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
---
v6:
Use generic names for bindings
.../devicetree/bindings/mtd/ti,am654-hbmc.txt | 51 +++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 52 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mtd/ti,am654-hbmc.txt
diff --git a/Documentation/devicetree/bindings/mtd/ti,am654-hbmc.txt b/Documentation/devicetree/bindings/mtd/ti,am654-hbmc.txt
new file mode 100644
index 000000000000..c06038c136d8
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/ti,am654-hbmc.txt
@@ -0,0 +1,51 @@
+Bindings for HyperBus Memory Controller (HBMC) on TI's K3 family of SoCs
+
+Required properties:
+- compatible : "ti,am654-hbmc" for AM654 SoC
+- reg : Two entries:
+ First entry pointed to the register space of HBMC controller
+ Second entry pointing to the memory map region dedicated for
+ MMIO access to attached flash devices
+- ranges : Address translation from offset within CS to allocated MMIO
+ space in SoC
+
+Optional properties:
+- mux-controls : phandle to the multiplexer that controls selection of
+ HBMC vs OSPI inside Flash SubSystem (FSS). Default is OSPI,
+ if property is absent.
+ See Documentation/devicetree/bindings/mux/reg-mux.txt
+ for mmio-mux binding details
+
+Example:
+
+ fss: system-controller@47000000 {
+ compatible = "syscon", "simple-mfd";
+ reg = <0x0 0x47000000 0x0 0x100>;
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ hbmc_mux: multiplexer {
+ compatible = "mmio-mux";
+ #mux-control-cells = <1>;
+ mux-reg-masks = <0x4 0x2>; /* 0: reg 0x4, bit 1 */
+ };
+
+ hbmc: hyperbus@47034000 {
+ compatible = "ti,am654-hbmc";
+ reg = <0x0 0x47034000 0x0 0x100>,
+ <0x5 0x00000000 0x1 0x0000000>;
+ power-domains = <&k3_pds 55>;
+ #address-cells = <2>;
+ #size-cells = <1>;
+ ranges = <0x0 0x0 0x5 0x00000000 0x4000000>, /* CS0 - 64MB */
+ <0x1 0x0 0x5 0x04000000 0x4000000>; /* CS1 - 64MB */
+ mux-controls = <&hbmc_mux 0>;
+
+ /* Slave flash node */
+ flash@0,0 {
+ compatible = "cypress,hyperflash", "cfi-flash";
+ reg = <0x0 0x0 0x4000000>;
+ };
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 58c6ad3dae66..0d5a8c36682d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7359,6 +7359,7 @@ S: Supported
F: drivers/mtd/hyperbus/
F: include/linux/mtd/hyperbus.h
F: Documentation/devicetree/bindings/mtd/cypress,hyperflash.txt
+F: Documentation/devicetree/bindings/mtd/ti,am654-hbmc.txt
HYPERVISOR VIRTUAL CONSOLE DRIVER
L: linuxppc-dev@lists.ozlabs.org
--
2.21.0
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next prev parent reply other threads:[~2019-06-18 9:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-18 9:28 [PATCH v6 0/5] MTD: Add Initial Hyperbus support Vignesh Raghavendra
2019-06-18 9:28 ` [PATCH v6 1/5] mtd: cfi_cmdset_0002: Add support for polling status register Vignesh Raghavendra
2019-06-18 9:28 ` [PATCH v6 2/5] dt-bindings: mtd: Add binding documentation for HyperFlash Vignesh Raghavendra
2019-06-18 9:28 ` [PATCH v6 3/5] mtd: Add support for HyperBus memory devices Vignesh Raghavendra
2019-06-18 9:29 ` Vignesh Raghavendra [this message]
2019-06-18 9:29 ` [PATCH v6 5/5] mtd: hyperbus: Add driver for TI's HyperBus memory controller Vignesh Raghavendra
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