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sd: sdhci: Implement basic vendor specific register support

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The Linux kernel's IMX code now uses vendor specific commands.
This results in endless warnings when booting the Linux kernel.

sdhci-esdhc-imx 2194000.usdhc: esdhc_wait_for_card_clock_gate_off:
	card clock still not gate off in 100us!.

Implement support for the vendor specific command implemented in IMX hardware
to be able to avoid this warning.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Message-id: 20200603145258.195920-2-linux@roeck-us.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Guenter Roeck 2020-06-16 10:32:29 +01:00 • committed by Peter Maydell
parent 8095508a9d
commit 3b2d81766f
3 changed files with 27 additions and 1 deletions
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5
include/hw/sd/sdhci.h
View file

@ -74,6 +74,7 @@ typedef struct SDHCIState {
uint16_t acmd12errsts; /* Auto CMD12 error status register */
uint16_t hostctl2; /* Host Control 2 */
uint64_t admasysaddr; /* ADMA System Address Register */
uint16_t vendor_spec; /* Vendor specific register */
/* Read-only registers */
uint64_t capareg; /* Capabilities Register */
@ -96,8 +97,12 @@ typedef struct SDHCIState {
uint32_t quirks;
uint8_t sd_spec_version;
uint8_t uhs_mode;
uint8_t vendor; /* For vendor specific functionality */
} SDHCIState;
#define SDHCI_VENDOR_NONE 0
#define SDHCI_VENDOR_IMX 1
/*
* Controller does not provide transfer-complete interrupt when not
* busy.