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Date: Wed, 10 May 2017 15:43:55 -0700
From: Bjorn Andersson <bjorn.andersson@...aro.org>
To: Varadarajan Narayanan <varada@...eaurora.org>
Cc: robh+dt@...nel.org, mark.rutland@....com, mturquette@...libre.com,
sboyd@...eaurora.org, linus.walleij@...aro.org,
andy.gross@...aro.org, david.brown@...aro.org,
catalin.marinas@....com, will.deacon@....com,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-clk@...r.kernel.org, linux-gpio@...r.kernel.org,
linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, absahu@...eaurora.org,
sjaganat@...eaurora.org, sricharan@...eaurora.org,
Manoharan Vijaya Raghavan <mraghava@...eaurora.org>
Subject: Re: [PATCH v2 1/5] pinctrl: qcom: Add ipq8074 pinctrl driver
On Thu 04 May 04:53 PDT 2017, Varadarajan Narayanan wrote:
> Add initial pinctrl driver to support pin configuration with
> pinctrl framework for ipq8074.
>
> Signed-off-by: Manoharan Vijaya Raghavan <mraghava@...eaurora.org>
> Signed-off-by: Varadarajan Narayanan <varada@...eaurora.org>
> ---
> .../bindings/pinctrl/qcom,ipq8074-pinctrl.txt | 187 +++
> drivers/pinctrl/qcom/Kconfig | 10 +
> drivers/pinctrl/qcom/Makefile | 1 +
> drivers/pinctrl/qcom/pinctrl-ipq8074.c | 1217 ++++++++++++++++++++
> 4 files changed, 1415 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/pinctrl/qcom,ipq8074-pinctrl.txt
> create mode 100644 drivers/pinctrl/qcom/pinctrl-ipq8074.c
>
> diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,ipq8074-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/qcom,ipq8074-pinctrl.txt
[..]
> +- pins:
> + Usage: required
> + Value type: <string-array>
> + Definition: List of gpio pins affected by the properties specified in
> + this subnode. Valid pins are:
> + gpio0-gpio121,
> + sdc1_clk,
> + sdc1_cmd,
> + sdc1_data
> + sdc2_clk,
> + sdc2_cmd,
> + sdc2_data,
> + qdsd_cmd,
> + qdsd_data0,
> + qdsd_data1,
> + qdsd_data2,
> + qdsd_data3
These doesn't match the implementation.
> +
> +- function:
> + Usage: required
> + Value type: <string>
> + Definition: Specify the alternative function to be configured for the
> + specified pins. Functions are only valid for gpio pins.
> + Valid values are:
> + gpio, qpic_pad, blsp5_i2c, blsp5_spi, wci20, blsp3_spi3,
> + burn0, pcm_zsi0, blsp5_uart, mac12, blsp3_spi0, burn1, mac01,
> + qdss_cti_trig_out_b0, qdss_cti_trig_in_b0, qpic_pad4,
> + blsp4_uart0, blsp4_i2c0, blsp4_spi0, mac21,
> + qdss_cti_trig_out_b1, qpic_pad5, qdss_cti_trig_in_b1,
> + qpic_pad6, qpic_pad7, cxc0, mac13, qdss_cti_trig_in_a1,
> + qdss_cti_trig_out_a1, wci22, qdss_cti_trig_in_a0, qpic_pad1,
> + qdss_cti_trig_out_a0, qpic_pad2, qpic_pad3, qdss_traceclk_b,
> + qpic_pad0, qdss_tracectl_b, qpic_pad8, pcm_zsi1,
> + qdss_tracedata_b, led0, pwm04, led1, pwm14, led2, pwm24,
> + pwm00, blsp4_uart1, blsp4_i2c1, blsp4_spi1, wci23, mac11,
> + blsp3_spi2, pwm10, pwm20, pwm30, audio_txmclk, pwm02,
> + audio_txbclk, pwm12, audio_txfsync, pwm22, audio_txd, pwm32,
> + audio_rxmclk, pwm03, atest_char0, audio_rxbclk, pwm13,
> + atest_char1, audio_rxfsync, pwm23, atest_char2, audio_rxd,
> + pwm33, atest_char3, pcm_drx, mac10, mac00, pcm_dtx, pcm_fsync,
> + mac20, qdss_traceclk_a, pcm_pclk, qdss_tracectl_a, atest_char,
> + qdss_tracedata_a, blsp0_uart, blsp0_i2c, blsp0_spi,
> + blsp1_uart, blsp1_i2c, blsp1_spi, blsp2_uart, blsp2_i2c,
> + blsp2_spi, blsp3_uart, blsp3_i2c, blsp3_spi, pta2_0, wci21,
> + cxc1, blsp3_spi1, pta2_1, pta2_2, pcie0_clk, dbg_out,
> + cri_trng0, pcie0_rst, cri_trng1, pcie0_wake, cri_trng,
> + pcie1_clk, rx2, ldo_update, pcie1_rst, ldo_en, pcie1_wake,
> + gcc_plltest, sd_card, pwm01, pta1_1, pwm11, rx1, pta1_2,
> + gcc_tlmm, pta1_0, pwm21, prng_rosc, sd_write, pwm31, rx0,
> + tsens_max, mdc, mdio, NA
Please indent these to the same level as the description.
> +
[..]
> +
> +- output-high:
> + Usage: optional
> + Value type: <none>
> + Definition: The specified pins are configured in output mode, driven
> + high.
> + Not valid for sdc pins.
If you don't have any sdc pins, drop this.
> +
> +- output-low:
> + Usage: optional
> + Value type: <none>
> + Definition: The specified pins are configured in output mode, driven
> + low.
> + Not valid for sdc pins.
If you don't have any sdc pins, drop this.
> +
> +- drive-strength:
> + Usage: optional
> + Value type: <u32>
> + Definition: Selects the drive strength for the specified pins, in mA.
> + Valid values are: 2, 4, 6, 8, 10, 12, 14 and 16
> +
[..]
> diff --git a/drivers/pinctrl/qcom/pinctrl-ipq8074.c b/drivers/pinctrl/qcom/pinctrl-ipq8074.c
[..]
> +
> +enum ipq8074_functions {
Please keep these sorted alphabetically.
> + msm_mux_gpio,
> + msm_mux_qpic_pad,
> + msm_mux_blsp5_i2c,
> + msm_mux_blsp5_spi,
> + msm_mux_wci20,
What does "20" mean here?
> + msm_mux_blsp3_spi3,
> + msm_mux_burn0,
> + msm_mux_pcm_zsi0,
> + msm_mux_blsp5_uart,
> + msm_mux_mac12,
What does "12" mean here?
> + msm_mux_blsp3_spi0,
> + msm_mux_burn1,
> + msm_mux_mac01,
> + msm_mux_qdss_cti_trig_out_b0,
> + msm_mux_qdss_cti_trig_in_b0,
> + msm_mux_qpic_pad4,
What are qpic_pad and qpic_pad0 through qpic_pad8? Different functions,
alternative muxings...?
> + msm_mux_blsp4_uart0,
> + msm_mux_blsp4_i2c0,
> + msm_mux_blsp4_spi0,
> + msm_mux_mac21,
> + msm_mux_qdss_cti_trig_out_b1,
> + msm_mux_qpic_pad5,
> + msm_mux_qdss_cti_trig_in_b1,
> + msm_mux_qpic_pad6,
> + msm_mux_qpic_pad7,
> + msm_mux_cxc0,
> + msm_mux_mac13,
> + msm_mux_qdss_cti_trig_in_a1,
> + msm_mux_qdss_cti_trig_out_a1,
> + msm_mux_wci22,
> + msm_mux_qdss_cti_trig_in_a0,
> + msm_mux_qpic_pad1,
> + msm_mux_qdss_cti_trig_out_a0,
> + msm_mux_qpic_pad2,
> + msm_mux_qpic_pad3,
> + msm_mux_qdss_traceclk_b,
> + msm_mux_qpic_pad0,
> + msm_mux_qdss_tracectl_b,
> + msm_mux_qpic_pad8,
> + msm_mux_pcm_zsi1,
> + msm_mux_qdss_tracedata_b,
> + msm_mux_led0,
> + msm_mux_pwm04,
What does "04" mean here?
> + msm_mux_led1,
> + msm_mux_pwm14,
> + msm_mux_led2,
> + msm_mux_pwm24,
> + msm_mux_pwm00,
> + msm_mux_blsp4_uart1,
Are uart0 vs uart1 alternative muxes?
[..]
> +static const struct msm_function ipq8074_functions[] = {
Please keep these sorted alphabetically too.
Regards,
Bjorn
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