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authorSascha Hauer <s.hauer@pengutronix.de>2016-09-29 14:38:07 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2016-09-29 14:38:07 +0200
commitd9a15385467936649b6c2cfeb7ab377002ddce0f (patch)
tree39175107fc884a29fbba83f47d104f493833fe19 /dts/Bindings/memory-controllers
parentbfe946c9593513b0ad1b440bcd997b263487b945 (diff)
downloadbarebox-d9a15385467936649b6c2cfeb7ab377002ddce0f.tar.gz
barebox-d9a15385467936649b6c2cfeb7ab377002ddce0f.tar.xz
dts: update to v4.8-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/memory-controllers')
-rw-r--r--dts/Bindings/memory-controllers/atmel,ebi.txt136
-rw-r--r--dts/Bindings/memory-controllers/mediatek,smi-common.txt21
-rw-r--r--dts/Bindings/memory-controllers/mediatek,smi-larb.txt4
-rw-r--r--dts/Bindings/memory-controllers/omap-gpmc.txt7
4 files changed, 163 insertions, 5 deletions
diff --git a/dts/Bindings/memory-controllers/atmel,ebi.txt b/dts/Bindings/memory-controllers/atmel,ebi.txt
new file mode 100644
index 000000000..9bb5f57e2
--- /dev/null
+++ b/dts/Bindings/memory-controllers/atmel,ebi.txt
@@ -0,0 +1,136 @@
+* Device tree bindings for Atmel EBI
+
+The External Bus Interface (EBI) controller is a bus where you can connect
+asynchronous (NAND, NOR, SRAM, ....) and synchronous memories (SDR/DDR SDRAMs).
+The EBI provides a glue-less interface to asynchronous memories through the SMC
+(Static Memory Controller).
+
+Required properties:
+
+- compatible: "atmel,at91sam9260-ebi"
+ "atmel,at91sam9261-ebi"
+ "atmel,at91sam9263-ebi0"
+ "atmel,at91sam9263-ebi1"
+ "atmel,at91sam9rl-ebi"
+ "atmel,at91sam9g45-ebi"
+ "atmel,at91sam9x5-ebi"
+ "atmel,sama5d3-ebi"
+
+- reg: Contains offset/length value for EBI memory mapping.
+ This property might contain several entries if the EBI
+ memory range is not contiguous
+
+- #address-cells: Must be 2.
+ The first cell encodes the CS.
+ The second cell encode the offset into the CS memory
+ range.
+
+- #size-cells: Must be set to 1.
+
+- ranges: Encodes CS to memory region association.
+
+- clocks: Clock feeding the EBI controller.
+ See clock-bindings.txt
+
+Children device nodes are representing device connected to the EBI bus.
+
+Required device node properties:
+
+- reg: Contains the chip-select id, the offset and the length
+ of the memory region requested by the device.
+
+EBI bus configuration will be defined directly in the device subnode.
+
+Optional EBI/SMC properties:
+
+- atmel,smc-bus-width: width of the asynchronous device's data bus
+ 8, 16 or 32.
+ Default to 8 when undefined.
+
+- atmel,smc-byte-access-type "write" or "select" (see Atmel datasheet).
+ Default to "select" when undefined.
+
+- atmel,smc-read-mode "nrd" or "ncs".
+ Default to "ncs" when undefined.
+
+- atmel,smc-write-mode "nwe" or "ncs".
+ Default to "ncs" when undefined.
+
+- atmel,smc-exnw-mode "disabled", "frozen" or "ready".
+ Default to "disabled" when undefined.
+
+- atmel,smc-page-mode enable page mode if present. The provided value
+ defines the page size (supported values: 4, 8,
+ 16 and 32).
+
+- atmel,smc-tdf-mode: "normal" or "optimized". When set to
+ "optimized" the data float time is optimized
+ depending on the next device being accessed
+ (next device setup time is subtracted to the
+ current device data float time).
+ Default to "normal" when undefined.
+
+If at least one atmel,smc- property is defined the following SMC timing
+properties become mandatory. In the other hand, if none of the atmel,smc-
+properties are specified, we assume that the EBI bus configuration will be
+handled by the sub-device driver, and none of those properties should be
+defined.
+
+All the timings are expressed in nanoseconds (see Atmel datasheet for a full
+description).
+
+- atmel,smc-ncs-rd-setup-ns
+- atmel,smc-nrd-setup-ns
+- atmel,smc-ncs-wr-setup-ns
+- atmel,smc-nwe-setup-ns
+- atmel,smc-ncs-rd-pulse-ns
+- atmel,smc-nrd-pulse-ns
+- atmel,smc-ncs-wr-pulse-ns
+- atmel,smc-nwe-pulse-ns
+- atmel,smc-nwe-cycle-ns
+- atmel,smc-nrd-cycle-ns
+- atmel,smc-tdf-ns
+
+Example:
+
+ ebi: ebi@10000000 {
+ compatible = "atmel,sama5d3-ebi";
+ #address-cells = <2>;
+ #size-cells = <1>;
+ atmel,smc = <&hsmc>;
+ atmel,matrix = <&matrix>;
+ reg = <0x10000000 0x10000000
+ 0x40000000 0x30000000>;
+ ranges = <0x0 0x0 0x10000000 0x10000000
+ 0x1 0x0 0x40000000 0x10000000
+ 0x2 0x0 0x50000000 0x10000000
+ 0x3 0x0 0x60000000 0x10000000>;
+ clocks = <&mck>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_ebi_addr>;
+
+ nor: flash@0,0 {
+ compatible = "cfi-flash";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0x0 0x0 0x1000000>;
+ bank-width = <2>;
+
+ atmel,smc-read-mode = "nrd";
+ atmel,smc-write-mode = "nwe";
+ atmel,smc-bus-width = <16>;
+ atmel,smc-ncs-rd-setup-ns = <0>;
+ atmel,smc-ncs-wr-setup-ns = <0>;
+ atmel,smc-nwe-setup-ns = <8>;
+ atmel,smc-nrd-setup-ns = <16>;
+ atmel,smc-ncs-rd-pulse-ns = <84>;
+ atmel,smc-ncs-wr-pulse-ns = <84>;
+ atmel,smc-nrd-pulse-ns = <76>;
+ atmel,smc-nwe-pulse-ns = <76>;
+ atmel,smc-nrd-cycle-ns = <107>;
+ atmel,smc-nwe-cycle-ns = <84>;
+ atmel,smc-tdf-ns = <16>;
+ };
+ };
+
diff --git a/dts/Bindings/memory-controllers/mediatek,smi-common.txt b/dts/Bindings/memory-controllers/mediatek,smi-common.txt
index 06a83ceeb..aa614b2d7 100644
--- a/dts/Bindings/memory-controllers/mediatek,smi-common.txt
+++ b/dts/Bindings/memory-controllers/mediatek,smi-common.txt
@@ -2,16 +2,31 @@ SMI (Smart Multimedia Interface) Common
The hardware block diagram please check bindings/iommu/mediatek,iommu.txt
+Mediatek SMI have two generations of HW architecture, mt8173 uses the second
+generation of SMI HW while mt2701 uses the first generation HW of SMI.
+
+There's slight differences between the two SMI, for generation 2, the
+register which control the iommu port is at each larb's register base. But
+for generation 1, the register is at smi ao base(smi always on register
+base). Besides that, the smi async clock should be prepared and enabled for
+SMI generation 1 to transform the smi clock into emi clock domain, but that is
+not needed for SMI generation 2.
+
Required properties:
-- compatible : must be "mediatek,mt8173-smi-common"
+- compatible : must be one of :
+ "mediatek,mt2701-smi-common"
+ "mediatek,mt8173-smi-common"
- reg : the register and size of the SMI block.
- power-domains : a phandle to the power domain of this local arbiter.
- clocks : Must contain an entry for each entry in clock-names.
-- clock-names : must contain 2 entries, as follows:
+- clock-names : must contain 3 entries for generation 1 smi HW and 2 entries
+ for generation 2 smi HW as follows:
- "apb" : Advanced Peripheral Bus clock, It's the clock for setting
the register.
- "smi" : It's the clock for transfer data and command.
- They may be the same if both source clocks are the same.
+ They may be the same if both source clocks are the same.
+ - "async" : asynchronous clock, it help transform the smi clock into the emi
+ clock domain, this clock is only needed by generation 1 smi HW.
Example:
smi_common: smi@14022000 {
diff --git a/dts/Bindings/memory-controllers/mediatek,smi-larb.txt b/dts/Bindings/memory-controllers/mediatek,smi-larb.txt
index 55ff3b7e0..21277a56e 100644
--- a/dts/Bindings/memory-controllers/mediatek,smi-larb.txt
+++ b/dts/Bindings/memory-controllers/mediatek,smi-larb.txt
@@ -3,7 +3,9 @@ SMI (Smart Multimedia Interface) Local Arbiter
The hardware block diagram please check bindings/iommu/mediatek,iommu.txt
Required properties:
-- compatible : must be "mediatek,mt8173-smi-larb"
+- compatible : must be one of :
+ "mediatek,mt8173-smi-larb"
+ "mediatek,mt2701-smi-larb"
- reg : the register and size of this local arbiter.
- mediatek,smi : a phandle to the smi_common node.
- power-domains : a phandle to the power domain of this local arbiter.
diff --git a/dts/Bindings/memory-controllers/omap-gpmc.txt b/dts/Bindings/memory-controllers/omap-gpmc.txt
index 21055e210..c1359f4d4 100644
--- a/dts/Bindings/memory-controllers/omap-gpmc.txt
+++ b/dts/Bindings/memory-controllers/omap-gpmc.txt
@@ -46,6 +46,10 @@ Required properties:
0 maps to GPMC_WAIT0 pin.
- gpio-cells: Must be set to 2
+Required properties when using NAND prefetch dma:
+ - dmas GPMC NAND prefetch dma channel
+ - dma-names Must be set to "rxtx"
+
Timing properties for child nodes. All are optional and default to 0.
- gpmc,sync-clk-ps: Minimum clock period for synchronous mode, in picoseconds
@@ -137,7 +141,8 @@ Example for an AM33xx board:
ti,hwmods = "gpmc";
reg = <0x50000000 0x2000>;
interrupts = <100>;
-
+ dmas = <&edma 52 0>;
+ dma-names = "rxtx";
gpmc,num-cs = <8>;
gpmc,num-waitpins = <2>;
#address-cells = <2>;