On 2017-07-20 01:09, Boris Brezillon wrote:
On Wed, 19 Jul 2017 17:18:00 +0530
Abhishek Sahu <absahu@xxxxxxxxxxxxxx> wrote:
1. QPIC NAND will use compatible string "qcom,qpic-nandc-v1.4.0"
2. QPIC NAND will 3 BAM channels: command, data tx and data rx
while EBI2 NAND uses only single ADM channel.
3. CRCI is only required for ADM DMA and its not required for
QPIC NAND.
Signed-off-by: Abhishek Sahu <absahu@xxxxxxxxxxxxxx>
---
.../devicetree/bindings/mtd/qcom_nandc.txt | 54
++++++++++++++++++++--
1 file changed, 51 insertions(+), 3 deletions(-)
diff --git a/Documentation/devicetree/bindings/mtd/qcom_nandc.txt
b/Documentation/devicetree/bindings/mtd/qcom_nandc.txt
index b24adfe..8efaeb0 100644
--- a/Documentation/devicetree/bindings/mtd/qcom_nandc.txt
+++ b/Documentation/devicetree/bindings/mtd/qcom_nandc.txt
@@ -1,13 +1,15 @@
* Qualcomm NAND controller
Required properties:
-- compatible: should be "qcom,ebi2-nandc" - EBI2 NAND which uses ADM
- DMA like IPQ8064.
-
+- compatible: must be one of the following:
+ * "qcom,ebi2-nandc" - EBI2 NAND which uses ADM DMA like IPQ8064.
+ * "qcom,qpic-nandc-v1.4.0" - QPIC NAND v1.4.0 which uses BAM DMA
like IPQ4019.
- reg: MMIO address range
- clocks: must contain core clock and always on clock
- clock-names: must contain "core" for the core clock and "aon" for
the
always on clock
+
+EBI2 specific properties:
- dmas: DMA specifier, consisting of a phandle to the ADM DMA
controller node and the channel number to be used for
NAND. Refer to dma.txt and qcom_adm.txt for more details
@@ -18,6 +20,12 @@ Required properties:
- qcom,data-crci: must contain the ADM data type CRCI block instance
number specified for the NAND controller on the given
platform
+
+QPIC specific properties:
+- dmas: DMA specifier, consisting of a phandle to the BAM DMA
+ and the channel number to be used for NAND. Refer to
+ dma.txt, qcom_bam_dma.txt for more details
+- dma-names: must contain all 3 channel names : "tx", "rx", "cmd"
- #address-cells: <1> - subnodes give the chip-select number
- #size-cells: <0>
@@ -84,3 +92,43 @@ nand@1ac00000 {
};
};
};
+
+nand@79b0000 {
I think I already mentioned I'd prefer to have
nand-controller@xxxx {
Sorry. I Missed that part. I will change it in v3.
+ compatible = "qcom,qpic-nandc-v1.4.0";
+ reg = <0x79b0000 0x1000>;
+
+ clocks = <&gcc GCC_QPIC_CLK>,
+ <&gcc GCC_QPIC_AHB_CLK>;
+ clock-names = "core", "aon";
+
+ dmas = <&qpicbam 0>,
+ <&qpicbam 1>,
+ <&qpicbam 2>;
+ dma-names = "tx", "rx", "cmd";
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ nandcs@0 {
and
nand@x {
here.
Will change this also.
+ reg = <0>;
+ nand-ecc-strength = <4>;
+ nand-ecc-step-size = <512>;
+ nand-bus-width = <8>;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "boot-nand";
+ reg = <0 0x58a0000>;
+ };
+
+ partition@58a0000 {
+ label = "fs-nand";
+ reg = <0x58a0000 0x4000000>;
+ };
+ };
+ };
+};
--
Abhishek Sahu
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