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SubjectRe: [PATCH v2 13/25] mtd: nand: qcom: add QPIC NAND compatible string
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On 07/19/2017 05:18 PM, Abhishek Sahu wrote:
> The current driver only support EBI2 NAND which uses ADM DMA. The

s/support/supports

> latest QCOM controller supports QPIC NAND which uses BAM DMA. NAND
> registers and programming sequence are same for EBI2 and QPIC
> NAND so the same driver can support QPIC NAND also by adding the
> BAM DMA support. This patch adds the QPIC NAND support in current
> NAND driver with compatible string "qcom,qpic-nandc-v1.4.0" and
> maps it with different configuration parameter in driver data.
>

Reviewed-by: Archit Taneja <architt@codeaurora.org>

> Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
> ---
> drivers/mtd/nand/qcom_nandc.c | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
> diff --git a/drivers/mtd/nand/qcom_nandc.c b/drivers/mtd/nand/qcom_nandc.c
> index 3b0ae91..6d24630 100644
> --- a/drivers/mtd/nand/qcom_nandc.c
> +++ b/drivers/mtd/nand/qcom_nandc.c
> @@ -323,9 +323,11 @@ struct qcom_nand_host {
> * This data type corresponds to the nand controller properties which varies
> * among different NAND controller IP's.
> * @ecc_modes - ecc mode for NAND
> + * @is_bam - whether NAND controller is using bam
> */
> struct qcom_props {
> u32 ecc_modes;
> + bool is_bam;
> };
>
> static inline struct qcom_nand_host *to_qcom_nand_host(struct nand_chip *chip)
> @@ -2245,6 +2247,12 @@ static int qcom_nandc_remove(struct platform_device *pdev)
>
> static const struct qcom_props ebi2_nandc_data = {
> .ecc_modes = (ECC_RS_4BIT | ECC_BCH_8BIT),
> + .is_bam = false,
> +};
> +
> +static const struct qcom_props qpic_nandc_v1_4_0_data = {
> + .ecc_modes = (ECC_BCH_4BIT | ECC_BCH_8BIT),
> + .is_bam = true,
> };
>
> /*
> @@ -2255,6 +2263,9 @@ static int qcom_nandc_remove(struct platform_device *pdev)
> { .compatible = "qcom,ebi2-nandc",
> .data = &ebi2_nandc_data,
> },
> + { .compatible = "qcom,qpic-nandc-v1.4.0",
> + .data = &qpic_nandc_v1_4_0_data,
> + },
> {}
> };
> MODULE_DEVICE_TABLE(of, qcom_nandc_of_match);
>

--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

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