* [PATCH 0/2] mtd: fsl-quadspi: Update slave device hwcap based on mode provided in dtsi file
@ 2018-01-30 17:33 Yogesh Gaur
[not found] ` <1517333637-17331-1-git-send-email-yogeshnarayan.gaur-3arQi8VN3Tc@public.gmane.org>
0 siblings, 1 reply; 6+ messages in thread
From: Yogesh Gaur @ 2018-01-30 17:33 UTC (permalink / raw)
To: linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA, robh-DgEjT+Ai2ygdnm+yROfE0A,
mark.rutland-5wv7dgnIgG8, shawnguo-DgEjT+Ai2ygdnm+yROfE0A
Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
boris.brezillon-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8,
cyrille.pitchen-yU5RGvR974pGWvitb5QawA,
computersforpeace-Re5JQEeQqe8AvxtiuMwx3w, han.xu-3arQi8VN3Tc,
festevam-Re5JQEeQqe8AvxtiuMwx3w, prabhakar.kushwaha-3arQi8VN3Tc,
suresh.gupta-3arQi8VN3Tc, Yogesh Gaur
This patch-set added support to update hwcap of slave device connected to
FSL QUADSPI controller by reading values from the device tree files.
Mode information is available via "spi-tx-bus-width" and
"spi-rx-bus-width" nodes of device tree for the connected slave device.
Update read and write hwcap capability for slave device by reading
"spi-rx-bus-width" and "spi-tx-bus-width" respectively.
Added usage example by adding support for spi-rx-bus-width
and spi-tx-bus-width binding.
Depends on
https://patchwork.ozlabs.org/project/linux-mtd/list/?series=26084
Yogesh Gaur (2):
mtd: fsl-quadspi: Update slave device hwcap based on mode provided in
dtsi file
dt-bindings: fsl-quadspi: spi-rx/tx-bus-width usage example
.../devicetree/bindings/mtd/fsl-quadspi.txt | 30 ++++++++++++
drivers/mtd/spi-nor/fsl-quadspi.c | 56 ++++++++++++++++++++--
2 files changed, 81 insertions(+), 5 deletions(-)
--
1.9.1
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^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 1/2] mtd: fsl-quadspi: Update slave device hwcap based on mode provided in dtsi file
[not found] ` <1517333637-17331-1-git-send-email-yogeshnarayan.gaur-3arQi8VN3Tc@public.gmane.org>
@ 2018-01-30 17:33 ` Yogesh Gaur
2018-01-30 17:33 ` [PATCH 2/2] dt-bindings: fsl-quadspi: spi-rx/tx-bus-width usage example Yogesh Gaur
1 sibling, 0 replies; 6+ messages in thread
From: Yogesh Gaur @ 2018-01-30 17:33 UTC (permalink / raw)
To: linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA, robh-DgEjT+Ai2ygdnm+yROfE0A,
mark.rutland-5wv7dgnIgG8, shawnguo-DgEjT+Ai2ygdnm+yROfE0A
Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
boris.brezillon-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8,
cyrille.pitchen-yU5RGvR974pGWvitb5QawA,
computersforpeace-Re5JQEeQqe8AvxtiuMwx3w, han.xu-3arQi8VN3Tc,
festevam-Re5JQEeQqe8AvxtiuMwx3w, prabhakar.kushwaha-3arQi8VN3Tc,
suresh.gupta-3arQi8VN3Tc, Yogesh Gaur
FSL QuadSPI controller supports Single, dual, quad modes of operation.
Mode information is available via "spi-tx-bus-width" and
"spi-rx-bus-width" nodes of device tree for the connected slave device.
Update read and write hwcap capability for slave device by reading
"spi-rx-bus-width" and "spi-tx-bus-width" respectively.
Assign hwcaps mask to minimal caps for the slave node i.e.
SNOR_HWCAPS_READ | SNOR_HWCAPS_PP
If value not provided in device tree file, then fallback to default
mode i.e. SNOR_HWCAPS_READ_1_1_4 and SNOR_HWCAPS_PP.
Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha-3arQi8VN3Tc@public.gmane.org>
Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur-3arQi8VN3Tc@public.gmane.org>
---
Depends on
https://patchwork.ozlabs.org/project/linux-mtd/list/?series=26084
drivers/mtd/spi-nor/fsl-quadspi.c | 56 +++++++++++++++++++++++++++++++++++----
1 file changed, 51 insertions(+), 5 deletions(-)
diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c
index b9c5918..1503e0c 100644
--- a/drivers/mtd/spi-nor/fsl-quadspi.c
+++ b/drivers/mtd/spi-nor/fsl-quadspi.c
@@ -994,17 +994,14 @@ static void fsl_qspi_unprep(struct spi_nor *nor, enum spi_nor_ops ops)
static int fsl_qspi_probe(struct platform_device *pdev)
{
- const struct spi_nor_hwcaps hwcaps = {
- .mask = SNOR_HWCAPS_READ_1_1_4 |
- SNOR_HWCAPS_PP,
- };
+ struct spi_nor_hwcaps hwcaps;
struct device_node *np = pdev->dev.of_node;
struct device *dev = &pdev->dev;
struct fsl_qspi *q;
struct resource *res;
struct spi_nor *nor;
struct mtd_info *mtd;
- int ret, i = 0;
+ int ret, i = 0, value;
q = devm_kzalloc(dev, sizeof(*q), GFP_KERNEL);
if (!q)
@@ -1077,6 +1074,10 @@ static int fsl_qspi_probe(struct platform_device *pdev)
/* iterate the subnodes. */
for_each_available_child_of_node(dev->of_node, np) {
+ /* Reset hwcaps mask to minimal caps for the slave node. */
+ hwcaps.mask = SNOR_HWCAPS_READ | SNOR_HWCAPS_PP;
+ value = 0;
+
/* skip the holes */
if (!q->has_second_chip)
i *= 2;
@@ -1106,6 +1107,51 @@ static int fsl_qspi_probe(struct platform_device *pdev)
/* set the chip address for READID */
fsl_qspi_set_base_addr(q, nor);
+ /*
+ * If spi-rx-bus-width and spi-tx-bus-width not defined assign
+ * default hardware capabilities SNOR_HWCAPS_READ_1_1_4 and
+ * SNOR_HWCAPS_PP supported by the Quad-SPI controller.
+ */
+ if (!of_property_read_u32(np, "spi-rx-bus-width", &value)) {
+ switch (value) {
+ case 1:
+ hwcaps.mask |= SNOR_HWCAPS_READ |
+ SNOR_HWCAPS_READ_FAST;
+ break;
+ case 2:
+ hwcaps.mask |= SNOR_HWCAPS_READ_1_1_2 |
+ SNOR_HWCAPS_READ_1_2_2;
+ break;
+ case 4:
+ hwcaps.mask |= SNOR_HWCAPS_READ_1_1_4 |
+ SNOR_HWCAPS_READ_1_4_4;
+ break;
+ default:
+ dev_err(dev,
+ "spi-rx-bus-width %d not supported\n",
+ value);
+ break;
+ }
+ } else
+ hwcaps.mask |= SNOR_HWCAPS_READ_1_1_4;
+
+ if (!of_property_read_u32(np, "spi-tx-bus-width", &value)) {
+ switch (value) {
+ case 1:
+ hwcaps.mask |= SNOR_HWCAPS_PP;
+ break;
+ case 4:
+ hwcaps.mask |= SNOR_HWCAPS_PP_1_1_4 |
+ SNOR_HWCAPS_PP_1_4_4;
+ break;
+ default:
+ dev_err(dev,
+ "spi-tx-bus-width %d not supported\n",
+ value);
+ break;
+ }
+ }
+
ret = spi_nor_scan(nor, NULL, &hwcaps);
if (ret)
goto mutex_failed;
--
1.9.1
--
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^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH 2/2] dt-bindings: fsl-quadspi: spi-rx/tx-bus-width usage example
[not found] ` <1517333637-17331-1-git-send-email-yogeshnarayan.gaur-3arQi8VN3Tc@public.gmane.org>
2018-01-30 17:33 ` [PATCH 1/2] " Yogesh Gaur
@ 2018-01-30 17:33 ` Yogesh Gaur
[not found] ` <1517333637-17331-3-git-send-email-yogeshnarayan.gaur-3arQi8VN3Tc@public.gmane.org>
1 sibling, 1 reply; 6+ messages in thread
From: Yogesh Gaur @ 2018-01-30 17:33 UTC (permalink / raw)
To: linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA, robh-DgEjT+Ai2ygdnm+yROfE0A,
mark.rutland-5wv7dgnIgG8, shawnguo-DgEjT+Ai2ygdnm+yROfE0A
Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
boris.brezillon-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8,
cyrille.pitchen-yU5RGvR974pGWvitb5QawA,
computersforpeace-Re5JQEeQqe8AvxtiuMwx3w, han.xu-3arQi8VN3Tc,
festevam-Re5JQEeQqe8AvxtiuMwx3w, prabhakar.kushwaha-3arQi8VN3Tc,
suresh.gupta-3arQi8VN3Tc, Yogesh Gaur
Added usage example by adding support for spi-rx-bus-width
and spi-tx-bus-width binding.
Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur-3arQi8VN3Tc@public.gmane.org>
---
.../devicetree/bindings/mtd/fsl-quadspi.txt | 30 ++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt b/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt
index 63d4d626..811da0e 100644
--- a/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt
+++ b/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt
@@ -39,3 +39,33 @@ qspi0: quadspi@40044000 {
....
};
};
+
+qspi1: quadspi@20c0000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x0 0x20c0000 0x0 0x10000>,
+ <0x0 0x20000000 0x0 0x10000000>;
+ reg-names = "QuadSPI", "QuadSPI-memory";
+ interrupts = <0 25 0x4>; /* Level high type */
+ clocks = <&clockgen 4 3>, <&clockgen 4 3>;
+ clock-names = "qspi_en", "qspi";
+ status = "okay";
+
+ qflash0: s25fs512s@0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ spi-max-frequency = <20000000>;
+ reg = <0>;
+ spi-rx-bus-width = <4>;
+ spi-tx-bus-width = <4>;
+ };
+
+ qflash1: s25fs512s@1 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ spi-max-frequency = <20000000>;
+ reg = <1>;
+ spi-rx-bus-width = <4>;
+ spi-tx-bus-width = <4>;
+ };
+};
--
1.9.1
--
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^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH 2/2] dt-bindings: fsl-quadspi: spi-rx/tx-bus-width usage example
[not found] ` <1517333637-17331-3-git-send-email-yogeshnarayan.gaur-3arQi8VN3Tc@public.gmane.org>
@ 2018-01-30 18:53 ` Rob Herring
[not found] ` <CAL_JsqLBUDNEWkcrNcrOmuYcR=Gbf2ALD=z4s9AP4poOcBxNRQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
0 siblings, 1 reply; 6+ messages in thread
From: Rob Herring @ 2018-01-30 18:53 UTC (permalink / raw)
To: Yogesh Gaur
Cc: linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
Mark Rutland, Shawn Guo,
moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE,
Boris BREZILLON, Cyrille Pitchen, Brian Norris, Han Xu,
Fabio Estevam, Prabhakar Kushwaha, suresh.gupta-3arQi8VN3Tc
On Tue, Jan 30, 2018 at 11:33 AM, Yogesh Gaur
<yogeshnarayan.gaur-3arQi8VN3Tc@public.gmane.org> wrote:
> Added usage example by adding support for spi-rx-bus-width
> and spi-tx-bus-width binding.
Why not just add to existing example? Is there something unclear about
adding these properties to warrant an example? We don't need every
possible option enumerated.
Rob
--
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^ permalink raw reply [flat|nested] 6+ messages in thread
* RE: [PATCH 2/2] dt-bindings: fsl-quadspi: spi-rx/tx-bus-width usage example
[not found] ` <CAL_JsqLBUDNEWkcrNcrOmuYcR=Gbf2ALD=z4s9AP4poOcBxNRQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
@ 2018-02-02 5:24 ` Yogesh Narayan Gaur
0 siblings, 0 replies; 6+ messages in thread
From: Yogesh Narayan Gaur @ 2018-02-02 5:24 UTC (permalink / raw)
To: Rob Herring
Cc: linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
Mark Rutland, Shawn Guo,
moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE,
Boris BREZILLON, Cyrille Pitchen, Brian Norris, Han Xu,
Fabio Estevam, Prabhakar Kushwaha, Suresh Gupta
> -----Original Message-----
> From: devicetree-owner@vger.kernel.org [mailto:devicetree-
> owner@vger.kernel.org] On Behalf Of Rob Herring
> Sent: Wednesday, January 31, 2018 12:24 AM
> To: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com>
> Cc: linux-mtd@lists.infradead.org; open list:OPEN FIRMWARE AND FLATTENED
> DEVICE TREE BINDINGS <devicetree@vger.kernel.org>; Mark Rutland
> <mark.rutland@arm.com>; Shawn Guo <shawnguo@kernel.org>; moderated
> list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE <linux-arm-
> kernel@lists.infradead.org>; Boris BREZILLON <boris.brezillon@free-
> electrons.com>; Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>; Brian Norris
> <computersforpeace@gmail.com>; Han Xu <han.xu@nxp.com>; Fabio Estevam
> <festevam@gmail.com>; Prabhakar Kushwaha
> <prabhakar.kushwaha@nxp.com>; Suresh Gupta <suresh.gupta@nxp.com>
> Subject: Re: [PATCH 2/2] dt-bindings: fsl-quadspi: spi-rx/tx-bus-width usage
> example
>
> On Tue, Jan 30, 2018 at 11:33 AM, Yogesh Gaur
> <yogeshnarayan.gaur@nxp.com> wrote:
> > Added usage example by adding support for spi-rx-bus-width and
> > spi-tx-bus-width binding.
>
> Why not just add to existing example? Is there something unclear about adding
> these properties to warrant an example? We don't need every possible option
> enumerated.
>
Ok, would drop this patch and send another patch having usage of properties spi-rx-bus-width and spi-tx-bus-width in existing example under binding file 'spi-bus.txt'.
Thanks
> Rob
> --
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^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 2/2] dt-bindings: fsl-quadspi: spi-rx/tx-bus-width usage example
[not found] ` <1517333468-17153-1-git-send-email-yogeshnarayan.gaur-3arQi8VN3Tc@public.gmane.org>
@ 2018-01-30 17:31 ` Yogesh Gaur
0 siblings, 0 replies; 6+ messages in thread
From: Yogesh Gaur @ 2018-01-30 17:31 UTC (permalink / raw)
To: linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
devicetree-u79uwXL29TY76Z2rM5mHXA, robh-DgEjT+Ai2ygdnm+yROfE0A,
mark.rutland-5wv7dgnIgG8, shawnguo-DgEjT+Ai2ygdnm+yROfE0A
Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
boris.brezillon-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8,
cyrille.pitchen-yU5RGvR974pGWvitb5QawA,
computersforpeace-Re5JQEeQqe8AvxtiuMwx3w, han.xu-3arQi8VN3Tc,
festevam-Re5JQEeQqe8AvxtiuMwx3w, prabhakar.kushwaha-3arQi8VN3Tc,
suresh.gupta-3arQi8VN3Tc, Yogesh Gaur
Added usage example by adding support for spi-rx-bus-width
and spi-tx-bus-width binding.
Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur-3arQi8VN3Tc@public.gmane.org>
---
.../devicetree/bindings/mtd/fsl-quadspi.txt | 30 ++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt b/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt
index 63d4d626..811da0e 100644
--- a/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt
+++ b/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt
@@ -39,3 +39,33 @@ qspi0: quadspi@40044000 {
....
};
};
+
+qspi1: quadspi@20c0000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0x0 0x20c0000 0x0 0x10000>,
+ <0x0 0x20000000 0x0 0x10000000>;
+ reg-names = "QuadSPI", "QuadSPI-memory";
+ interrupts = <0 25 0x4>; /* Level high type */
+ clocks = <&clockgen 4 3>, <&clockgen 4 3>;
+ clock-names = "qspi_en", "qspi";
+ status = "okay";
+
+ qflash0: s25fs512s@0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ spi-max-frequency = <20000000>;
+ reg = <0>;
+ spi-rx-bus-width = <4>;
+ spi-tx-bus-width = <4>;
+ };
+
+ qflash1: s25fs512s@1 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ spi-max-frequency = <20000000>;
+ reg = <1>;
+ spi-rx-bus-width = <4>;
+ spi-tx-bus-width = <4>;
+ };
+};
--
1.9.1
--
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^ permalink raw reply related [flat|nested] 6+ messages in thread
end of thread, other threads:[~2018-02-02 5:24 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-01-30 17:33 [PATCH 0/2] mtd: fsl-quadspi: Update slave device hwcap based on mode provided in dtsi file Yogesh Gaur
[not found] ` <1517333637-17331-1-git-send-email-yogeshnarayan.gaur-3arQi8VN3Tc@public.gmane.org>
2018-01-30 17:33 ` [PATCH 1/2] " Yogesh Gaur
2018-01-30 17:33 ` [PATCH 2/2] dt-bindings: fsl-quadspi: spi-rx/tx-bus-width usage example Yogesh Gaur
[not found] ` <1517333637-17331-3-git-send-email-yogeshnarayan.gaur-3arQi8VN3Tc@public.gmane.org>
2018-01-30 18:53 ` Rob Herring
[not found] ` <CAL_JsqLBUDNEWkcrNcrOmuYcR=Gbf2ALD=z4s9AP4poOcBxNRQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-02-02 5:24 ` Yogesh Narayan Gaur
-- strict thread matches above, loose matches on Subject: below --
2018-01-30 17:31 [PATCH 0/2] mtd: fsl-quadspi: Update slave device hwcap based on mode provided in dtsi file Yogesh Gaur
[not found] ` <1517333468-17153-1-git-send-email-yogeshnarayan.gaur-3arQi8VN3Tc@public.gmane.org>
2018-01-30 17:31 ` [PATCH 2/2] dt-bindings: fsl-quadspi: spi-rx/tx-bus-width usage example Yogesh Gaur
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