[v3,2/3] riscv: dts: hifive-unleashed-a00: Add -u-boot.dtsi

Message ID 20200420125238.9610-3-jagan@amarulasolutions.com
State New
Headers show
Series
  • riscv: sifive/fu540: Enable SPI-NOR support
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Commit Message

Jagan Teki April 20, 2020, 12:52 p.m. UTC
Add U-Boot specific dts file for hifive-unleashed-a00, this
would help to add u-boot specific properties and other node
changes without touching the base dts(i) files which are easy
to sync from Linux.

Added spi2 alias for qspi2 as an initial u-boot specific
property change.

spi probing in current dm model is very much rely on aliases
numbering. Even though the qspi2 can't come under any associated
spi nor flash it would require to specify the same to make proper
binding happen for other spi slaves.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
---
Changes for v3:
- none 

 arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi

Comments

Bin Meng April 20, 2020, 2:02 p.m. UTC | #1
On Mon, Apr 20, 2020 at 8:52 PM Jagan Teki <jagan@amarulasolutions.com> wrote:
>
> Add U-Boot specific dts file for hifive-unleashed-a00, this
> would help to add u-boot specific properties and other node
> changes without touching the base dts(i) files which are easy
> to sync from Linux.
>
> Added spi2 alias for qspi2 as an initial u-boot specific
> property change.
>
> spi probing in current dm model is very much rely on aliases
> numbering. Even though the qspi2 can't come under any associated
> spi nor flash it would require to specify the same to make proper
> binding happen for other spi slaves.
>
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
> ---
> Changes for v3:
> - none
>
>  arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi | 10 ++++++++++
>  1 file changed, 10 insertions(+)
>  create mode 100644 arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi
>
> diff --git a/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi b/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi
> new file mode 100644
> index 0000000000..25ec8265a5
> --- /dev/null
> +++ b/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi
> @@ -0,0 +1,10 @@
> +// SPDX-License-Identifier: GPL-2.0+

Please dual-license this file, as other SiFive fu540 dts files do.

> +/*
> + * Copyright (C) 2019 Jagan Teki <jagan@amarulasolutions.com>
> + */
> +
> +/ {
> +       aliases {
> +               spi2 = &qspi2;
> +       };
> +};

Regards,
Bin

Patch

diff --git a/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi b/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi
new file mode 100644
index 0000000000..25ec8265a5
--- /dev/null
+++ b/arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi
@@ -0,0 +1,10 @@ 
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 Jagan Teki <jagan@amarulasolutions.com>
+ */
+
+/ {
+	aliases {
+		spi2 = &qspi2;
+	};
+};