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Date: Tue, 12 Jun 2018 20:21:06 +0200
From: klaus.goger@...obroma-systems.com
To: Randy Li <ayaka@...lik.info>
Cc: linux-rockchip@...ts.infradead.org,
Mark Rutland <mark.rutland@....com>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@...r.kernel.org>, Heiko Stuebner <heiko@...ech.de>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will.deacon@....com>,
LKML <linux-kernel@...r.kernel.org>,
Rob Herring <robh+dt@...nel.org>,
"moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
<linux-arm-kernel@...ts.infradead.org>,
Shawn Lin <shawn.lin@...k-chips.com>
Subject: Re: [PATCH] ARM64: dts: rockchip: add some pins to rk3399
Hi Randy,
> On 12.06.2018, at 17:25, Randy Li <ayaka@...lik.info> wrote:
>
> Those pins would be used by many boards.
>
> Signed-off-by: Randy Li <ayaka@...lik.info>
> ---
> arch/arm64/boot/dts/rockchip/rk3399.dtsi | 97 +++++++++++++++++++++++++++-----
> 1 file changed, 83 insertions(+), 14 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
> index e0040b648f43..9fa629857929 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
> +++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
> @@ -160,7 +160,7 @@
> };
> };
>
> - display-subsystem {
> + display_subsystem: display-subsystem {
nitpick: that change is not pin related
> compatible = "rockchip,display-subsystem";
> ports = <&vopl_out>, <&vopb_out>;
> };
> @@ -1936,19 +1936,49 @@
> drive-strength = <12>;
> };
>
> + pcfg_pull_none_13ma: pcfg-pull-none-13ma {
> + bias-disable;
> + drive-strength = <13>;
> + };
> +
> + pcfg_pull_none_18ma: pcfg-pull-none-18ma {
> + bias-disable;
> + drive-strength = <18>;
> + };
> +
> + pcfg_pull_none_20ma: pcfg-pull-none-20ma {
> + bias-disable;
> + drive-strength = <20>;
> + };
> +
> + pcfg_pull_up_2ma: pcfg-pull-up-2ma {
> + bias-pull-up;
> + drive-strength = <2>;
> + };
> +
> pcfg_pull_up_8ma: pcfg-pull-up-8ma {
> bias-pull-up;
> drive-strength = <8>;
> };
>
> + pcfg_pull_up_18ma: pcfg-pull-up-18ma {
> + bias-pull-up;
> + drive-strength = <18>;
> + };
> +
> + pcfg_pull_up_20ma: pcfg-pull-up-20ma {
> + bias-pull-up;
> + drive-strength = <20>;
> + };
> +
> pcfg_pull_down_4ma: pcfg-pull-down-4ma {
> bias-pull-down;
> drive-strength = <4>;
> };
>
> - pcfg_pull_up_2ma: pcfg-pull-up-2ma {
> - bias-pull-up;
> - drive-strength = <2>;
> + pcfg_pull_down_8ma: pcfg-pull-down-8ma {
> + bias-pull-down;
> + drive-strength = <8>;
> };
>
> pcfg_pull_down_12ma: pcfg-pull-down-12ma {
> @@ -1956,9 +1986,22 @@
> drive-strength = <12>;
> };
>
> - pcfg_pull_none_13ma: pcfg-pull-none-13ma {
> - bias-disable;
> - drive-strength = <13>;
> + pcfg_pull_down_18ma: pcfg-pull-down-18ma {
> + bias-pull-down;
> + drive-strength = <18>;
> + };
> +
> + pcfg_pull_down_20ma: pcfg-pull-down-20ma {
> + bias-pull-down;
> + drive-strength = <18>;
drive-strength = <20>?
> + };
> +
> + pcfg_output_high: pcfg-output-high {
> + output-high;
Trailing whitespace
> + };
> +
> + pcfg_output_low: pcfg-output-low {
> + output-low;
Trailing whitespace
> };
>
> clock {
> @@ -2484,10 +2527,21 @@
> <4 18 RK_FUNC_1 &pcfg_pull_none>;
> };
>
> + pwm0_pin_pull_down: pwm0-pin-pull-down {
> + rockchip,pins =
> + <4 18 RK_FUNC_1 &pcfg_pull_down>;
> + };
> +
> vop0_pwm_pin: vop0-pwm-pin {
> rockchip,pins =
> <4 18 RK_FUNC_2 &pcfg_pull_none>;
> };
> +
> + vop1_pwm_pin: vop1-pwm-pin {
> + rockchip,pins =
> + <4 18 RK_FUNC_3 &pcfg_pull_none>;
> + };
> +
> };
>
> pwm1 {
> @@ -2496,9 +2550,9 @@
> <4 22 RK_FUNC_1 &pcfg_pull_none>;
> };
>
> - vop1_pwm_pin: vop1-pwm-pin {
> + pwm1_pin_pull_down: pwm1-pin-pull-down {
> rockchip,pins =
> - <4 18 RK_FUNC_3 &pcfg_pull_none>;
> + <4 22 RK_FUNC_1 &pcfg_pull_down>;
> };
> };
>
> @@ -2507,6 +2561,11 @@
> rockchip,pins =
> <1 19 RK_FUNC_1 &pcfg_pull_none>;
> };
> +
> + pwm2_pin_pull_down: pwm2-pin-pull-down {
> + rockchip,pins =
> + <1 19 RK_FUNC_1 &pcfg_pull_none>;
> + };
&pcfg_pull_down?
> };
>
> pwm3a {
> @@ -2526,25 +2585,35 @@
> hdmi {
> hdmi_i2c_xfer: hdmi-i2c-xfer {
> rockchip,pins =
> - <4 RK_PC1 RK_FUNC_3 &pcfg_pull_none>,
> - <4 RK_PC0 RK_FUNC_3 &pcfg_pull_none>;
> + <4 17 RK_FUNC_3 &pcfg_pull_none>,
> + <4 16 RK_FUNC_3 &pcfg_pull_none>;
> };
>
Please keep the RK_Pxx macros.
> hdmi_cec: hdmi-cec {
> rockchip,pins =
> - <4 RK_PC7 RK_FUNC_1 &pcfg_pull_none>;
> + <4 23 RK_FUNC_1 &pcfg_pull_none>;
> };
Same
> };
>
> pcie {
> + pcie_clkreqn: pci-clkreqn {
> + rockchip,pins =
> + <2 26 RK_FUNC_2 &pcfg_pull_none>;
> + };
> +
> + pcie_clkreqnb: pci-clkreqnb {
> + rockchip,pins =
> + <4 24 RK_FUNC_1 &pcfg_pull_none>;
> + };
> +
I’m not sure if pci-clkreqn is functional at all. If not I’m not sure if we should add it to the dtsi.
Shawn may know more about it.
> pcie_clkreqn_cpm: pci-clkreqn-cpm {
> rockchip,pins =
> - <2 RK_PD2 RK_FUNC_GPIO &pcfg_pull_none>;
> + <2 26 RK_FUNC_GPIO &pcfg_pull_none>;
> };
>
> pcie_clkreqnb_cpm: pci-clkreqnb-cpm {
> rockchip,pins =
> - <4 RK_PD0 RK_FUNC_GPIO &pcfg_pull_none>;
> + <4 24 RK_FUNC_GPIO &pcfg_pull_none>;
> };
> };
>
> --
> 2.14.4
Could we actually use RK_Pxx for all new pin definitions? Would increase readability a lot.
Thanks,
Klaus
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