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Message-ID: <1439344955.9677.1526991935718@email.1und1.de>
Date: Tue, 22 May 2018 14:25:35 +0200 (CEST)
From: Stefan Wahren <stefan.wahren@...e.com>
To: michael@...rulasolutions.com, robh+dt@...nel.org,
fabio.estevam@....com, mark.rutland@....com,
Anson Huang <Anson.Huang@....com>, matteo.lisi@...icam.com,
shawnguo@...nel.org, kernel@...gutronix.de,
mturquette@...libre.com, sboyd@...nel.org
Cc: linux-clk@...r.kernel.org, Linux-imx@....com,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/2] clk: imx6ul: add GPIO clock gates
Hi Anson,
> Anson Huang <Anson.Huang@....com> hat am 22. Mai 2018 um 05:25 geschrieben:
>
>
> i.MX6UL has GPIO clock gates in CCM CCGR, add
> them into clock tree for clock management.
>
> Signed-off-by: Anson Huang <Anson.Huang@....com>
> ---
> drivers/clk/imx/clk-imx6ul.c | 5 +++++
> include/dt-bindings/clock/imx6ul-clock.h | 31 ++++++++++++++++++-------------
> 2 files changed, 23 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/clk/imx/clk-imx6ul.c b/drivers/clk/imx/clk-imx6ul.c
> index ba563ba..3ea2d97 100644
> --- a/drivers/clk/imx/clk-imx6ul.c
> +++ b/drivers/clk/imx/clk-imx6ul.c
> @@ -360,6 +360,7 @@ static void __init imx6ul_clocks_init(struct device_node *ccm_node)
> clks[IMX6UL_CLK_UART2_SERIAL] = imx_clk_gate2("uart2_serial", "uart_podf", base + 0x68, 28);
> if (clk_on_imx6ull())
> clks[IMX6UL_CLK_AIPSTZ3] = imx_clk_gate2("aips_tz3", "ahb", base + 0x80, 18);
> + clks[IMX6UL_CLK_GPIO2] = imx_clk_gate2("gpio2", "ipg", base + 0x68, 30);
>
> /* CCGR1 */
> clks[IMX6UL_CLK_ECSPI1] = imx_clk_gate2("ecspi1", "ecspi_podf", base + 0x6c, 0);
> @@ -376,6 +377,8 @@ static void __init imx6ul_clocks_init(struct device_node *ccm_node)
> clks[IMX6UL_CLK_GPT1_SERIAL] = imx_clk_gate2("gpt1_serial", "perclk", base + 0x6c, 22);
> clks[IMX6UL_CLK_UART4_IPG] = imx_clk_gate2("uart4_ipg", "ipg", base + 0x6c, 24);
> clks[IMX6UL_CLK_UART4_SERIAL] = imx_clk_gate2("uart4_serial", "uart_podf", base + 0x6c, 24);
> + clks[IMX6UL_CLK_GPIO1] = imx_clk_gate2("gpio1", "ipg", base + 0x6c, 26);
> + clks[IMX6UL_CLK_GPIO5] = imx_clk_gate2("gpio5", "ipg", base + 0x6c, 30);
>
> /* CCGR2 */
> if (clk_on_imx6ull()) {
> @@ -389,6 +392,7 @@ static void __init imx6ul_clocks_init(struct device_node *ccm_node)
> clks[IMX6UL_CLK_I2C3] = imx_clk_gate2("i2c3", "perclk", base + 0x70, 10);
> clks[IMX6UL_CLK_OCOTP] = imx_clk_gate2("ocotp", "ipg", base + 0x70, 12);
> clks[IMX6UL_CLK_IOMUXC] = imx_clk_gate2("iomuxc", "lcdif_podf", base + 0x70, 14);
> + clks[IMX6UL_CLK_GPIO3] = imx_clk_gate2("gpio3", "ipg", base + 0x70, 26);
> clks[IMX6UL_CLK_LCDIF_APB] = imx_clk_gate2("lcdif_apb", "axi", base + 0x70, 28);
> clks[IMX6UL_CLK_PXP] = imx_clk_gate2("pxp", "axi", base + 0x70, 30);
>
> @@ -405,6 +409,7 @@ static void __init imx6ul_clocks_init(struct device_node *ccm_node)
> clks[IMX6UL_CLK_UART6_IPG] = imx_clk_gate2("uart6_ipg", "ipg", base + 0x74, 6);
> clks[IMX6UL_CLK_UART6_SERIAL] = imx_clk_gate2("uart6_serial", "uart_podf", base + 0x74, 6);
> clks[IMX6UL_CLK_LCDIF_PIX] = imx_clk_gate2("lcdif_pix", "lcdif_podf", base + 0x74, 10);
> + clks[IMX6UL_CLK_GPIO4] = imx_clk_gate2("gpio4", "ipg", base + 0x74, 12);
> clks[IMX6UL_CLK_QSPI] = imx_clk_gate2("qspi1", "qspi1_podf", base + 0x74, 14);
> clks[IMX6UL_CLK_WDOG1] = imx_clk_gate2("wdog1", "ipg", base + 0x74, 16);
> clks[IMX6UL_CLK_MMDC_P0_FAST] = imx_clk_gate("mmdc_p0_fast", "mmdc_podf", base + 0x74, 20);
> diff --git a/include/dt-bindings/clock/imx6ul-clock.h b/include/dt-bindings/clock/imx6ul-clock.h
> index 9564597..1291328 100644
> --- a/include/dt-bindings/clock/imx6ul-clock.h
> +++ b/include/dt-bindings/clock/imx6ul-clock.h
> @@ -242,20 +242,25 @@
> #define IMX6UL_CLK_CKO2_PODF 229
> #define IMX6UL_CLK_CKO2 230
> #define IMX6UL_CLK_CKO 231
> +#define IMX6UL_CLK_GPIO1 232
> +#define IMX6UL_CLK_GPIO2 233
> +#define IMX6UL_CLK_GPIO3 234
> +#define IMX6UL_CLK_GPIO4 235
> +#define IMX6UL_CLK_GPIO5 236
this change looks like a breakage of devicetree ABI. You are changing the mean of the existing clock IDs on i.MX6ULL, which probably regress the combination of older DTBs with newer kernel.
>
> /* For i.MX6ULL */
> -#define IMX6ULL_CLK_ESAI_PRED 232
> -#define IMX6ULL_CLK_ESAI_PODF 233
> -#define IMX6ULL_CLK_ESAI_EXTAL 234
> -#define IMX6ULL_CLK_ESAI_MEM 235
> -#define IMX6ULL_CLK_ESAI_IPG 236
> -#define IMX6ULL_CLK_DCP_CLK 237
> -#define IMX6ULL_CLK_EPDC_PRE_SEL 238
> -#define IMX6ULL_CLK_EPDC_SEL 239
> -#define IMX6ULL_CLK_EPDC_PODF 240
> -#define IMX6ULL_CLK_EPDC_ACLK 241
> -#define IMX6ULL_CLK_EPDC_PIX 242
> -#define IMX6ULL_CLK_ESAI_SEL 243
> -#define IMX6UL_CLK_END 244
> +#define IMX6ULL_CLK_ESAI_PRED 237
> +#define IMX6ULL_CLK_ESAI_PODF 238
> +#define IMX6ULL_CLK_ESAI_EXTAL 239
> +#define IMX6ULL_CLK_ESAI_MEM 240
> +#define IMX6ULL_CLK_ESAI_IPG 241
> +#define IMX6ULL_CLK_DCP_CLK 242
> +#define IMX6ULL_CLK_EPDC_PRE_SEL 243
> +#define IMX6ULL_CLK_EPDC_SEL 244
> +#define IMX6ULL_CLK_EPDC_PODF 245
> +#define IMX6ULL_CLK_EPDC_ACLK 246
> +#define IMX6ULL_CLK_EPDC_PIX 247
> +#define IMX6ULL_CLK_ESAI_SEL 248
> +#define IMX6UL_CLK_END 249
>
> #endif /* __DT_BINDINGS_CLOCK_IMX6UL_H */
> --
> 2.7.4
>
>
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> linux-arm-kernel@...ts.infradead.org
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