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Merge tag 'at91-fixes-5.15-2' of git://git.kernel.org/pub/scm/linux/k…
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…ernel/git/at91/linux into arm/fixes

AT91 fixes #2 for 5.15:

- More fixes for AT91 platform power management code related to the
  introduction of sama7g5:
  - management of DDR3L regulator rails for sama7g5ek
  - loading of TLB on different cores

- PIO controller slew-rate settings for sama7g5ek: be aligned with
  datasheet requirements.

* tag 'at91-fixes-5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux:
  ARM: dts: at91: sama7g5ek: to not touch slew-rate for SDMMC pins
  ARM: dts: at91: sama7g5ek: use proper slew-rate settings for GMACs
  ARM: at91: pm: preload base address of controllers in tlb
  ARM: at91: pm: group constants and addresses loading
  ARM: dts: at91: sama7g5ek: add suspend voltage for ddr3l rail

Link: https://lore.kernel.org/r/20211004114344.19304-1-nicolas.ferre@microchip.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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@arndb
arndb committed Oct 5, 2021
2 parents dd6a2ed + dbe68bc commit 325c81e
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Showing 2 changed files with 63 additions and 15 deletions.
36 changes: 30 additions & 6 deletions arch/arm/boot/dts/at91-sama7g5ek.dts
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Original file line number Diff line number Diff line change
Expand Up @@ -196,11 +196,13 @@

regulator-state-standby {
regulator-on-in-suspend;
regulator-suspend-microvolt = <1350000>;
regulator-mode = <4>;
};

regulator-state-mem {
regulator-on-in-suspend;
regulator-suspend-microvolt = <1350000>;
regulator-mode = <4>;
};
};
Expand Down Expand Up @@ -353,7 +355,10 @@
#address-cells = <1>;
#size-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gmac0_default &pinctrl_gmac0_txck_default &pinctrl_gmac0_phy_irq>;
pinctrl-0 = <&pinctrl_gmac0_default
&pinctrl_gmac0_mdio_default
&pinctrl_gmac0_txck_default
&pinctrl_gmac0_phy_irq>;
phy-mode = "rgmii-id";
status = "okay";

Expand All @@ -368,7 +373,9 @@
#address-cells = <1>;
#size-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gmac1_default &pinctrl_gmac1_phy_irq>;
pinctrl-0 = <&pinctrl_gmac1_default
&pinctrl_gmac1_mdio_default
&pinctrl_gmac1_phy_irq>;
phy-mode = "rmii";
status = "okay";

Expand Down Expand Up @@ -423,14 +430,20 @@
<PIN_PA15__G0_TXEN>,
<PIN_PA30__G0_RXCK>,
<PIN_PA18__G0_RXDV>,
<PIN_PA22__G0_MDC>,
<PIN_PA23__G0_MDIO>,
<PIN_PA25__G0_125CK>;
slew-rate = <0>;
bias-disable;
};

pinctrl_gmac0_mdio_default: gmac0_mdio_default {
pinmux = <PIN_PA22__G0_MDC>,
<PIN_PA23__G0_MDIO>;
bias-disable;
};

pinctrl_gmac0_txck_default: gmac0_txck_default {
pinmux = <PIN_PA24__G0_TXCK>;
slew-rate = <0>;
bias-pull-up;
};

Expand All @@ -447,8 +460,13 @@
<PIN_PD25__G1_RX0>,
<PIN_PD26__G1_RX1>,
<PIN_PD27__G1_RXER>,
<PIN_PD24__G1_RXDV>,
<PIN_PD28__G1_MDC>,
<PIN_PD24__G1_RXDV>;
slew-rate = <0>;
bias-disable;
};

pinctrl_gmac1_mdio_default: gmac1_mdio_default {
pinmux = <PIN_PD28__G1_MDC>,
<PIN_PD29__G1_MDIO>;
bias-disable;
};
Expand Down Expand Up @@ -540,13 +558,15 @@
<PIN_PA8__SDMMC0_DAT5>,
<PIN_PA9__SDMMC0_DAT6>,
<PIN_PA10__SDMMC0_DAT7>;
slew-rate = <0>;
bias-pull-up;
};

ck_cd_rstn_vddsel {
pinmux = <PIN_PA0__SDMMC0_CK>,
<PIN_PA2__SDMMC0_RSTN>,
<PIN_PA11__SDMMC0_DS>;
slew-rate = <0>;
bias-pull-up;
};
};
Expand All @@ -558,6 +578,7 @@
<PIN_PC0__SDMMC1_DAT1>,
<PIN_PC1__SDMMC1_DAT2>,
<PIN_PC2__SDMMC1_DAT3>;
slew-rate = <0>;
bias-pull-up;
};

Expand All @@ -566,6 +587,7 @@
<PIN_PB28__SDMMC1_RSTN>,
<PIN_PC5__SDMMC1_1V8SEL>,
<PIN_PC4__SDMMC1_CD>;
slew-rate = <0>;
bias-pull-up;
};
};
Expand All @@ -577,11 +599,13 @@
<PIN_PD6__SDMMC2_DAT1>,
<PIN_PD7__SDMMC2_DAT2>,
<PIN_PD8__SDMMC2_DAT3>;
slew-rate = <0>;
bias-pull-up;
};

ck {
pinmux = <PIN_PD4__SDMMC2_CK>;
slew-rate = <0>;
bias-pull-up;
};
};
Expand Down
42 changes: 33 additions & 9 deletions arch/arm/mach-at91/pm_suspend.S
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Original file line number Diff line number Diff line change
Expand Up @@ -1014,31 +1014,55 @@ ENTRY(at91_pm_suspend_in_sram)
mov tmp1, #0
mcr p15, 0, tmp1, c7, c10, 4

/* Flush tlb. */
mov r4, #0
mcr p15, 0, r4, c8, c7, 0

ldr tmp1, [r0, #PM_DATA_PMC_MCKR_OFFSET]
str tmp1, .mckr_offset
ldr tmp1, [r0, #PM_DATA_PMC_VERSION]
str tmp1, .pmc_version
ldr tmp1, [r0, #PM_DATA_MEMCTRL]
str tmp1, .memtype
ldr tmp1, [r0, #PM_DATA_MODE]
str tmp1, .pm_mode

/*
* ldrne below are here to preload their address in the TLB as access
* to RAM may be limited while in self-refresh.
*/
ldr tmp1, [r0, #PM_DATA_PMC]
str tmp1, .pmc_base
cmp tmp1, #0
ldrne tmp2, [tmp1, #0]

ldr tmp1, [r0, #PM_DATA_RAMC0]
str tmp1, .sramc_base
cmp tmp1, #0
ldrne tmp2, [tmp1, #0]

ldr tmp1, [r0, #PM_DATA_RAMC1]
str tmp1, .sramc1_base
cmp tmp1, #0
ldrne tmp2, [tmp1, #0]

#ifndef CONFIG_SOC_SAM_V4_V5
/* ldrne below are here to preload their address in the TLB */
ldr tmp1, [r0, #PM_DATA_RAMC_PHY]
str tmp1, .sramc_phy_base
ldr tmp1, [r0, #PM_DATA_MEMCTRL]
str tmp1, .memtype
ldr tmp1, [r0, #PM_DATA_MODE]
str tmp1, .pm_mode
ldr tmp1, [r0, #PM_DATA_PMC_MCKR_OFFSET]
str tmp1, .mckr_offset
ldr tmp1, [r0, #PM_DATA_PMC_VERSION]
str tmp1, .pmc_version
/* Both ldrne below are here to preload their address in the TLB */
cmp tmp1, #0
ldrne tmp2, [tmp1, #0]

ldr tmp1, [r0, #PM_DATA_SHDWC]
str tmp1, .shdwc
cmp tmp1, #0
ldrne tmp2, [tmp1, #0]

ldr tmp1, [r0, #PM_DATA_SFRBU]
str tmp1, .sfrbu
cmp tmp1, #0
ldrne tmp2, [tmp1, #0x10]
#endif

/* Active the self-refresh mode */
at91_sramc_self_refresh_ena
Expand Down

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